This was taken from the first post in a thread on FCP by CobaltBlue.
If I need to take this down, or give more specific credit, let me know TP or mods.
But I think this is a good overall list that we can add to, esp. for staking/backing terms.
< = less than (typically used to sarcastically compare a losing hand to a winning one...in other words, denotes a suckout or coinflip)
<3 = heart (look at it sideways)
+1 = originally intended to add 1 post to a user's count, but now sometimes akin to QFT in addition to bumping the thread and "rating" it highly
1.4 = Phil Laak's nickname for Antonio Esfandiari (Esfandiari won $1.4m in the LAPC)
2+2 = popular poker publisher and forums
4 = mocking name for 2+2
AINEC = And It's Not Even Close
AIPF = all-in pre-flop
AP = Absolute Poker
APPT = Asia Pacific Poker Tour
barrage = FCPers agree to inundate MTTs on various poker sites in order to increase the glory of the community
BAW = Bored At Work
BBFIDTS = Bad Beat Forum Is Down The Street
BBV = Brag, Beat, Variance (forum section or thread typically devoted to non-strategic hand histories)
Big Game = usually a $4k/$8k mixed poker game that takes place in Vegas with some of the best players in the world
Bill Fillmaff = Phil Hellmuth parody
Bob = FCP Info (the guy that handled FCP's poker room and promotions)
BR = bankroll
brazillion = FCP's large imaginary number of choice
broccoli = rigged
Charter Member = an FCP member who signed up in fall 2005 for special promotions
Circuit, The = CardPlayer's former poker radio show
Clarkmeister = in LHE, a bet/fold (or sometimes bet/call) line when HU and OOP on a river after the 4th flush card hits (a specific type of "value-bluff")
cold-deck (n) / cold-decked (adj) = originally an indication that the deck was rigged, but now more oftenly used interchangeably with cooler
conditioning = knowingly folding the best hand in order that your opponents don't see that you slowplayed
converter = tool that makes hand histories easier to read
cooler (n) / coolered (adj) = a poker situation where one player has a very strong but second-best hand
Corporation = a group of pro players that took on Andy Beal in a series of highest-stakes HULHE games
CP = CardPlayer
DFTPWYGB = don't forget to post when you go broke
DGN = Digital Gaming Network (the defunct FCP poker room's second network)
Dise = ParadisePoker
DN = Daniel Negreanu
donk = strategically bad/oblivious poker player
donkament = derisive name for tournament
donkbet = a bet that's made out of position by someone who didn't have the betting lead in the previous round (sometimes shortened to 'donk')
DS = Deep Stack/Double Shootout
DUCY? = Do You See Why?
EV = expected value (if something, usually an action, has positive expectation, it's +EV; similarly, if it has negative expectation, it's -EV)
e-val = electronic validation (similar to giving props/respect/recognition...typically for something clever)
FCPHA = FCP Hardcore Army (where most of the girls hang out)
FCPHUL = FCP Heads-Up League
FFS = for eff's sake
FidPoker = accepted nickname of Daniel's first protege, Brian Fidler
flipament = a heads-up poker tournament where the contestants agree to go all-in every hand (derives its name from the idea that it's more akin to flipping coins than poker)
FPS = Fancy Play Syndrome (the tendency to make overly complicated plays when straight-forward ones would suffice)
FT = Final Table/FullTilt
FTL = For The Loss
FTP = FullTilt Poker
FTOPS = FullTilt Online Poker Series
FTW = For The Win
FWP = FoxwoodsPro
FWIW = for what it's worth
FYP/FMP = "Fixed" Your Post/My Post
GAJ = Get A Job
General/GenPo = the part of the forum you're in now
gg = good game (typically said to someone at the end of play)
GG me = "good game, me" (said after posting how you got knocked out of a tournament)
gin = the perfect card to catch
GL = good luck
gogogogo = an common exuberant form of 'go/win'
Harrah's = the casino corporation responsible for the WSOP and WSOPC
HH = Hand History
hit by a bus = random gossip when a player hasn't been seen for a while (most famously applied to Gus Hansen)
HOH = "Harrington On Hold 'Em"
HPFAP = "Hold 'Em Poker For Advanced Players"
HPT = Heartland Poker Tour
HSP = High-Stakes Poker (the show on GSN)
IDH = I'd Do Him/Her
IGHN = I Go Home Now
IIRC = if I recall correctly
IP = in position
IPITS = I Play It The Same
ISACC = I Suck At Catching Cards
ISAP = I Suck At Poker
ISATD = I Suck At Table Draws
Jerry (Where's Jerry?) = DN Protege Contest participant who mysteriously disappeared at the final table
jopke = Phil Hellmuth misspelled 'joke' while on tilt, and Paul Phillips humorously brought attention to it
JS = Just Saying
KFL = Kathy Effing Liebert
KidPoker = Daniel's nickname
Knockout tournament = a type of bounty tournament that's becoming increasingly popular on FT
Krablar = K3 in Hold 'Em (known for its mystical powers and pinch-pinch dance when it wins)
LAG = Loose-Aggressive
LAPC = Los Angeles Poker Classic
LAPT = Latin America Poker Tour
lawsuit = typically a reference to the recent lawsuit brought against the WPT by seven professional players (Daniel is opposed to it)
LC = Low Content
ldo = like duh, obviously
Lee (Jones) = PokerStars' former poker host (often the object of blame/praise)
LFT = life effing tilt
MBN = must be nice
MM = Mike Matusow
mobney = another Hellmuth misspelling brought to light by Phillips
Mushu = DN's dog who occasionally posts poems
NAPC = North American Poker Championship
NB = 'nice bet'/'nice bluff'
Neg-O = Negreanu Open (a series of online tournaments)
NC = No Content
NH/VNH = literally: 'nice hand'/'very nice hand'; figuratively: 'well said'
nit = a very tight player (while originally used derisively, now frequently used in jest)
NP = 'no problem'/'nice play'
NSFW = 'Not Safe For Work' (typically nudity involved)
nutbar = to play maniacally for the sake of fun/venting (in a limit setting to raise whenever you have the option)
NWP = Neverwinpoker
obv = 'obviously' (most often used in a cynical manner)
OL = open limp
OOP = out of position
OP = original poster/original post
OT = Off-Topic
open-farrell = open-folding when you have the option of checking (especially for "strategic" purposes as espoused by jfarrell)
P5s = Pocket 5's (popular poker site famous for ranking online players)
PA = Patrik Antonius
PAD = Poker After Dark (a nightly show on NBC)
PAHUD = PokerAce Heads Up Display (a piece of software that works in conjunction with PokerTracker to overlay statistics on tables)
PCA = PokerStars Caribbean Adventure
PIITB = Put It In The Butt
POB = Penis On Back (reference to the debacle that was Brandi Hawbaker's accusation against Captain Tom)
POTD/POTW/POTM/POTY = Post of the Day/Week/Month/Year
pottery = FCP member Tantalar famously asked for Daniel's address so that he could send him a vase
PP = PartyPoker (or less commonly 'pocket pair')
PPA = Poker Players Alliance
PPL = Professional Poker League
PPT = Professional Poker Tour
PR = PokerRoad
Protege, Daniel's = Daniel's poker student who earns the title and prizes through a regularly scheduled contest
PS = PokerStars
PT = PokerTracker
ptbb = PokerTracker Big Bet (twice the BB in NL games)
PW = PokerWire
PWYGB = Post When You Go Broke
QFT = Quoted For Truth ("I Agree"/"Amen")
QFMFT = Quoted For Mother Effing Truth
rail = to observe a poker player without playing; the place from where the observation takes place
rail call = a request for railing (typically by a player in a tournament)
rail tards = stupid poker observers usually identified by dumb comments in the chat
rakeback = a system that returns part of the rake that you pay
red bucket = reference to a random thread in OT that sparked a flurry of bucket image postings
rigged = originally an accusation of underhanded poker software, now often used sarcastically
RKIGS = Retarded Kid In Grocery Store
RGP = rec.gambling.poker (famous poker newsgroup)
robusto = to go from being stuck to breaking even (also used in contrast to 'busto')
Rocks & Rings = indicative of a "high-class", bling lifestyle (taken from an article by Esfandiari)
ROI = return on investment (a percentage of money earned against money risked)
SFG = so effing gay
SFW = 'Safe For Work' (typically no nudity involved)
SIITP = Stick It In The Pooper
skipament = a tournament in the tradition of flipaments but played full ring with slightly more strategy (rules are agreed upon by participants prior to play)
Smash Strat = a basic low-stakes NLHE strategy proposed by Smasharoo
SS1/SS2 = "Super/System 1", "Super/System 2"
SSHE = "Small Stakes Hold 'Em"
Stacked = Daniel's poker video game that went through endless delays
Stove (PokerStove) = hand analysis/simulation (equity calculation) tool
Strat/Strategy = the section of the forum dealing with strategy
superthreads = extremely long threads, usually with divergent discussion and typically located in Off-Topic (i.e. Army, Hideout, Sick, Challenge, BAW)
(SW) = Sarcasm Warning
T7 = Daniel's favorite HE hand
TAG = Tight-Aggressive
TID = Take It Down
TOP = "Theory of Poker"
TOTD/TOTW/TOTM/TOTY = Thread of the Day/Week/Month/Year
TP/MM = Turn Pro, Make Millions (variations are prolific)
TTIUWP = This Thread Is Useless Without Pics
TTIWWP = This Thread Is Worthless Without Pics
TY = thank you
UB = UltimateBet
ul = unlucky (typically said in "sympathy" to someone that suffered a bad beat)
variance = commonly a substitute for "luck" (most often of the "bad" variety)
vlog = video-blog
WA/WB = Way Ahead, Way Behind (used when speaking about poker strategy)
WCOOP = World Championship of Online Poker (an annual series of tournaments on PokerStars)
wp = 'well played'
WPA = World Poker Alliance
WPC = World Poker Challenge
WPF = World Poker Finals
WPO = World Poker Open
WPT = World Poker Tour
WSOP = World Series Of Poker
WSOPC = World Series of Poker Circuit Events
WSOPE = World Series of Poker Europe
YSAPASSCKY = You Suck At Poker, And Should Seriously Consider Killing Yourself
YSALSKY = You Suck At Life, So Kill Yourself
YSAPSKY = You Suck At Poker, So Kill Yourself
YSSCKY = You Should Seriously Consider Killing Yourself
ZOMG = a more exaggerated, typically sarcastic form of 'Oh my God'