Here are some commonly used email abbreviations and their meanings:
BTW - By The Way
FYI - For Your Information
IMHO - In My Humble/Honest Opinion
RTFM - Read The Manual
LOL - Laughing Out Loud
RSN - Real Soon Now
ROTFL - Rolling On The Floor Laughing
TTFN - Ta Ta For Now
TTYL - Talk To You Later
TIA - Thanks In Advance
<g> - grin
If words can't express what you are feeling, try these commonly used symbolic gestures to express yourself:
:-) Basic smiley, used with a sarcastic or joking statement since we can't hear voice inflection over e-mail.
;-) Winky smiley. User just made a flirtatious and/or sarcastic remark. More of a "don't hit me for what I just said" smiley.
:-( Frowning smiley. User did not like that last statement or is upset or depressed about something.
:-I Indifferent smiley. Better than a :-( but not quite as good as a :-)
:-> User just made a really biting sarcastic remark. Worse than a ;-)