Acronym Finder (for the old timers like me)

Definition of contemporary acronyms listed below, so I can easily translate a post.
I know this isn't directly related to volleyball, but instead of jumping around sub-forums I decided to post here.
Some are pretty basic and well-known already; this is for posterity's sake.


EDIT: I'll update the original post as I run across more.


VOLLEYBALL RELATED
VT = VolleyTalk Forum
RPI = Rating Percentage Index (a quantity used to rank sports teams based upon a team's wins and losses and its strength of schedule.
..........It is one of the sports rating systems by which NCAA basketball, baseball, softball, hockey, soccer, lacrosse, and volleyball teams are ranked.)
SOS = Strength of Schedule 
TO = Time Out
SE = Service Error
SO% = Side Out Percentage
OSO% = Opponents Side Out Percentage
SW = Serves Won
SL = Serves Lost
RW = Receptions Won
RL = Receptions Lost
PW = Points Won
PL = Points Lost
MP = Matches Played
MS = Matches Started


NON-VOLLEYBALL
WOSO = Women's Soccer
OTOH = On The Other Hand
FWIW = For What It's Worth
SMH = Shaking My Head
SOG = Shot On Goal
WELP = Well (when one feels there is no more to say)
IMO = In My Opinion
IMHO = In My Humble Opinion
FYI = For Your Information
LMAO = Laughing My A$$ Off
LOL = Laughing Out Loud