Other than the SatrianiFourm, where do you guys like to hang out? Some of my other favorite site are:

TDPRI.com - A Fender Telecaster Site
PrijectGuitar.com - A Hobby and Pro Guitar Builder Forum
Jemsite.com - A Ibanez Forum

petrucci forum
the gear page
suhr guitar forum
musicplayers.com which I think is a great site and I recomend it to you all

and completely unrelated
Dynamite glove - great boxing anime
soccernet.com
espn.com

forum.muzikant.org - the largest buglarian forum for musicians. Only for learning to play, discuss, trade, share your music (I mean no 'hey do you like the latest album of...')
http://www.musiker-board.de/vb/ - largest german one

also sometimes as tschommer said:
PrijectGuitar.com - A Hobby and Pro Guitar Builder Forum
sometimes I am there as well

and those three waste a lot of my time :D