I don't respond to questions concerning digital rips or trades for rips because I don't have the means to accommodate them.

Undocumented Guidelines
Reference Wiki Wiki! with labelographies
reference.discogs.com
BAOI order
label guidelines

Matrix schemes with catalog numbers
Alphanumeric strings and Manufacture codes in vinyl runout etchings
Hardy Fox - Hardy Fox for GZ Media vinyl matrix scheme “######X~/Z”
Germany: Optimal Media GmbH
GZ Media vinyl matrix scheme “######X~/Z”
"parenthetical characters printed on the labels are not actually a part of the official Matrix numbers, and should not be entered into the BaOI Matrix field."

Identifying etchings
List of identified etchings - Alphabetical
runout groove etchings and guidance
RCA Victor Master Serial Number Codes - 1942-1980's
K-Tel
Common runout groove etchings group
Runout groove etchings/stampers identification

Unusual/difficult etchings
Angular BB
'MP' actually is 'GP' (George Piros), often misinterpreted as '4P', 'AP' '9P' etc.: Cream (2) - Live Cream Volume II
Capitol Stamper sources: Tennessee Ernie Ford - Ol' Rockin' Ern
??Σ on Elektra and not the SM of Santa Maria
(1)m script on Keith Jarrett - Bop-Be
copychar.cc

Pressing Plants

Columbia
This thing: Λ
Big Brother & The Holding Company - Cheap Thrills is a PXT and example of "Mastered At X Pressed At" notation
Gene Autry - Gene Autry's Country Music Hall Of Fame Album is a multi-plant example
Pressing Plants: pick one already: Chicago (2) - Chicago III
labels and cover manufacturers

Atlantic
Nice matrix breakdown: Crosby, Stills, Nash & Young - Déjà Vu

Capitol
Pinckneyville pressing denoted by the last P in matrix and a 1 inch pressing ring. Capital lacquer cut is a letter after the last dash (P, T) followed by a number

RCA
Byzantine master serial number codes used by RCA Victor, its sublabels and custom clients and [url=CBS / Columbia Canada Don Mills Plant]CBS / Columbia Canada Don Mills Plant[/url]
San serif I is recommended

Voting considerations
Runouts need to be consolidated per RSG §5.2.c.

First and foremost: Discogs is a peer review based community, people get butthurt if you vote Needs Minor Changes.
Use RSG §20.2.5 as touchstone, but is it worth the hassle?
Fix it if you can.
Comment if you can't. Vote correct if correct.
Vote neg if the last comment was ignored or if the last editor is the update bot or an inactive/closed/banned user.
If the last edit was correct, but you need/want to edit anyways, vote correct first, so that the previous effort will be rewarded.

RSG §4.3.3 "Locations within locations, for example, "Studio 1, Abbey Road Studios" should usually be entered into the Release Notes."

RSG §12.2.7. For side identification, please use A, B, etc. in place of 1, 2, One, Two, Side One, Side Two, etc. But don't bother arguing with people about "Side A" outside of tracks as it is not worth the effort due to a lack of clarity in the guidelines: San Francisco Ltd. - San Francisco Ltd.

mispress or misprint:
Misprint = There are errors in the text on the labels.
Mispress = Audio issues like Side A audio on Side B, not labels on wrong side, same labels both sides, wrong labels, etc.
RSG §1.4.4 "...Manufacturing tolerance based variations in the shades of label paper or ink color.

RSG §2.5.4: ANVs are not to be used for surname changes.
Mislabelings such as (correct) labels misapplied to incorrect sides, two of the same labels, or missing labels.
Unintended vinyl coloration caused by variation in vinyl stock, etc.
These examples would not count as a unique release"

- Even if a release has sequential track numbering (RSG §12.2.6), side specification of vinyl and cassette releases is mandatory (RSG §12.2.3). All other cases should use the standard Discogs positions (RSG §12.2.9).

- For the first time on vinyl! = marketing gimmick. If it's has been issued before, it's almost certainly a Reissue: acording to RSG §6.17.1, this term is generally independent of the format.

- Reissue (RSG §6.17.1) and repress (RSG §6.17.2) are two different, yet -sometimes- complementary terms.

- Vinyl must not stay on the free text field of a vinyl release. According to RSG §6.1.5, the free text field should not be used to describe things that are already in the Format or Description fields.

- If a vinyl record is plain black, there's no need to add Black to free text field: RSG §6.1.5.

- When adding a double (or multiple) vinyl release pressed on two different colors, always use the expanded format (RSG §6.1.2) so that each color can be added in the free text field.

- All Media format is your friend: don't be afraid to use it! :-)

- No matter any fancy term used by the band / record label, RSG §6.1.7 requires to put color first in free text field!

- When adding / editing physical (= touchable) releases, do not upload pictures of generic sleeves or digital mock ups taken from third party websites: this is not allowed. This common practice does not help other fellow collectors to better identify between each release. Please, see RSG §13.1.4.

General
"makes more sense to put "variant 1" etc. at the end of the description field

First variant

Discogs submissions guidelines

ANVs which are surname alone (or misspelling thereof) or include real forename (or initial / misspelling thereof) belong to real name profile per staff ruling (See The Band - The Band).
No need to always say etched or stamped e.g. Cream (2) - Best Of Cream
Do not split the runout strings up into stamped and etched parts - they should be left in one line
How Can I Format Text?
LP + Album is goodjust LP + 33RPM or 12" is redundant
Guidelines

* Standard English capitalization rules in description fields as per guidelines
* Static BAOI first as per forum consensus
* Example: Peter, Paul And Mary* - Album 1700
Moved Ory credit to real name PAN per http://www.e-healthmachine.com/forum/thread/869533

ANVs that are either the surname alone (or misspellings thereof) or include the real forename (or initials thereof) always belong to the real name alias per staff ruling http://www.e-healthmachine.com/forum/thread/333683#3121316

Artists
Joiners as on release take precedence.
If there's no joiner use a comma.
For artists on 'split' releases a slash is preferred.
artists can be merged

? ? ? ? ? ? ? ? ? ? € $ £ ? ? ? √ ?← ↑ → ↓ ? | ? ? ? ? № ? ? ? ★ ? ? △? ° ? // № ? § ∫ ? ? ? ?

á à ā é è ē ?/E? ??/é? ??/è? ??/ē?? í ì ī ó ò ō ?/O? ??/ó? ??/ò? ??/ō? ú ù ū
á à ā é è ē ?/e? ??/é? ??/è? ??/ē?? í ì ī ó ò ō ?/o? ??/ó? ??/ò? ??/ō? ú ù ū
ü ? ? ? ü ? ?
① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨ ⑩
? and ? ?&? ?+?
? and ? ?&? ?+?
? ? € £ $ ¢ ? ? §
"? … ? – —
█ ■ Δ ▼ ▽△★ ? ? ? ? ? ???? ? → ¤
| | ‖ ? ? ? μ ?
± ≠ ∞ 1 2 3 ? ? ? № No ? ? ? ° o a
? ? ? ?
à á ? ? ? ? ? ? è é ê ? ì í ? ? D ? ò ó ? ? ? × ? ù ú ? ü Y ? T ? à á a ? ? ? ? ? è é ê ? ì í ? ? e ? ò ó ? ? ? ù ú ? ü y t ?

Example: The Boll Weevil Jass Band - Plays Just A Little While, Volume 2

collectorz page
bandcamp
Recent Activity
Blues Brothers* - Made In America
added Blues Brothers* - Made In America to their collection. about 6 hours ago
Ursula K. Le Guin* - The Ones Who Walk Away From Omelas
added Ursula K. Le Guin* - The Ones Who Walk Away From Omelas to their collection. about 7 hours ago
Slimy Member - Ugly Songs For Ugly People... L.P.
added Slimy Member - Ugly Songs For Ugly People... L.P. to their wantlist. about 8 hours ago
The Elementals (3) With Captain Ricky Pluto - Living Stones
added The Elementals (3) With Captain Ricky Pluto - Living Stones to their collection. about 11 hours ago
Ed Sanders - Beer Cans On The Moon
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Savoy Brown - A Step Further
added Savoy Brown - A Step Further to their collection. about 13 hours ago
The New Christy Minstrels - The Quiet Sides Of The New Christy Minstrels
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Buck Owens And His Buckaroos - The Instrumental Hits Of Buck Owens And His Buckaroos
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Michael Doucet - Lacher Prise
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Michael Doucet - Lacher Prise
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Buck Owens - The Best Of Buck Owens
added Buck Owens - The Best Of Buck Owens to their collection. 3 days ago
Willie Nelson - Always On My Mind
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Santana - Inner Secrets
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Phil Ochs - In Concert
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Olivia Newton-John - Let Me Be There
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added Gram Parsons - Grievous Angel to their collection. 4 days ago
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added Elvis Presley - 50,000,000 Elvis Fans Can't Be Wrong (Elvis' Gold Records, Vol. 2) to their collection. 5 days ago
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added Dolly Parton - Greatest Hits to their collection. 5 days ago
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added The Stuyvesant String Quartet - Quartet Music Of The 17th & 18th Centuries to their collection. 5 days ago
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added The Isley Brothers - Smooth Sailin' to their collection. 5 days ago
The Inkspots* - The Very Best Of The Inkspots
added The Inkspots* - The Very Best Of The Inkspots to their collection. 6 days ago
The Inkspots* - The Very Best Of The Inkspots
added The Inkspots* - The Very Best Of The Inkspots to their collection. 6 days ago
Thomas Dolby - Windpower
submitted Thomas Dolby - Windpower. 6 days ago
Jack Eljan - Tom Lehrer's Song Satires
posted a comment on Jack Eljan - Tom Lehrer's Song Satires. 6 days ago
From http://www.crazycollege.org/lehrer.html

>GEO: Shortly after you began selling your first record by mail order mostly, this guy named Jack Eljan comes along and makes a knock-off of the album!.

TOM LEHRER: What happened there was that I had so... See full review
Jack Eljan - Tom Lehrer's Song Satires
added Jack Eljan - Tom Lehrer's Song Satires to their collection. 6 days ago
Electric Light Orchestra - Discovery
added Electric Light Orchestra - Discovery to their collection. 7 days ago
Electric Light Orchestra - Discovery
added Electric Light Orchestra - Discovery to their collection. 7 days ago
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added Cleo Laine & Dudley Moore - Smilin' Through to their collection. 7 days ago
Cheech Y Chong* - Los Cochinos
added Cheech Y Chong* - Los Cochinos to their collection. 7 days ago
Cheech Y Chong* - Los Cochinos
added Cheech Y Chong* - Los Cochinos to their collection. 7 days ago
Caamp - Boys
added Caamp - Boys to their collection. 7 days ago
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added Mickey Newbury - 'Frisco Mabel Joy to their collection. 7 days ago
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added M. Ward - A Wasteland Companion to their collection. 8 days ago
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added The Voodoo Love Gods - The Voodoo Love Gods to their collection. 8 days ago
Groucho Marx - An Evening With Groucho
added Groucho Marx - An Evening With Groucho to their collection. 8 days ago
Various - Moonlight Memories Featuring The Ink Spots And Mills Brothers
submitted Various - Moonlight Memories Featuring The Ink Spots And Mills Brothers. 8 days ago
Morgana King - With A Taste Of Honey
added Morgana King - With A Taste Of Honey to their collection. 9 days ago
The Vapors - New Clear Days
added The Vapors - New Clear Days to their collection. 9 days ago
The KLF - Last Train To Trancentral (Live From The Lost Continent)
added The KLF - Last Train To Trancentral (Live From The Lost Continent) to their collection. 10 days ago
Billie Holiday - Lady Sings The Blues
added Billie Holiday - Lady Sings The Blues to their collection. 10 days ago
Boz Scaggs - Boz Scaggs
added Boz Scaggs - Boz Scaggs to their collection. 10 days ago
The Bevis Frond - Triptych
added The Bevis Frond - Triptych to their collection. 11 days ago
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added Saint Jacques - Saint Jacques to their collection. 11 days ago
Dolly Parton - Here You Come Again
added Dolly Parton - Here You Come Again to their collection. 11 days ago
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added Happy The Man - Happy The Man to their collection. 11 days ago
The Old Kentucky String Band - Twilight Is Stealing
added The Old Kentucky String Band - Twilight Is Stealing to their collection. 12 days ago
Elvis* - Worldwide 50 Gold Award Hits, Vol. 1
added Elvis* - Worldwide 50 Gold Award Hits, Vol. 1 to their collection. 12 days ago
Ink Spots* - I Don't Want To Set The World On Fire / Hey Doc!
added Ink Spots* - I Don't Want To Set The World On Fire / Hey Doc! to their collection. 12 days ago