Quick Geek Acronym Guide

BSDBerkeley Standard Distribution, a type of Unix
IANALI am not a lawyer
IIRCIf I recall correctly
IMHOIn my humble opinion
IMNSHOIn my not so humble opinion
IMNSFHOIn my not so fucking humble opinion
LOLI am an easily-amused, AOL-using idiot
NSFWNot safe for work
RTFMRead the fucking manual
STFWSearch the fucking web
YMMVYour mileage may vary
WTF?What the fuck?
*nixThe Unix operating system and its derivatives, such as Linux, (Free|Net|Open)BSD, Solaris, Xenix, HP/UX, Ultrix...

More of these may be found at AcronymFinder.com, The Jargon File and the Free Online Dictionary of Computing.