Of course:
E-mail: yahoo, hotmail, gmail and the mail of schooll ipn
search: google and alltheweb
my favorites: MT, Inanimetions and my space in geocities of yahoo
Tutorial: goodtutorials and others but i can't remenber

mersenne forum, ecmnet, game politics, kotaku, anidb, megatokyo, ctrl+alt+del

www.gaiaonline.com
www.animepaper.net
www(...)

here most of the time.

hummm .. let me see now .. MT .. a romania forum called Anime-Angels .. gendou .. isohunt .. mangaupdates .. baka-updates .. animesuki .. stoptazmo .. tokyotosho .. and that`s kinda all .. ^^"

http://www.eluniversal.com.mx
http://www.minitokyo.com
http://www.myotaku.com
http://www.monerohernandez.com
http://www.elchamuco.com.mx
http://www.guiaroji.com.mx
http://mx.yahoo.com
http://www.google.com.mx
http://www.babelfish.altavista.com
http://www.marcianos.com.mx
http://www.hotmail.com
http://www.hergo.com.mx
and more.............................. :P

PC Experts

Tomshardware <<-- I recommend this!

PC Gilmore

PC Express

I visit this everyday!

distrowatch.org
linux.softpedia.com
freshmeat.net
warez forum, etc

i think is yahoo

MT (duh)
Uncyclopedia
IGN Boards
Deviant Art
Facebook
Smash Bros. Dojo
Hotmail
Youtube (mostly to listen to Muse...>_>)

Minitokyo (of course!)

Anime Paper (less frequently, though)

YouTube (Shiiiiiiii - naaaaaaaahhhh...........)

well me..

Yahoo and google *lol*
photobucket
Wikipedia *i don't know why..i love sreaching *
animesuki.net
deviantart
animepaper *for scan XP*
gendou.com
MT too lol

tcaf (old days),multi,animepaper,MT,friendster,Baka-U(...)

hmm....i think that's it!

fanfiction.net

facebook.com

various forums and such like this one

online galleries

Minitokyo.net
Animeforum.com
Planetrenders.net
Deviantart.com
Bilddagboken.se
VGcats.something?
... and google. xD

Minitokyo, Lunar Cafe, Demonseed's, Anime News Network, RPGamer, IGN, Hotmail, and.... Wikipedia.

minitokyo.net of course
fansub.tv - to see if there are new releases of ongoing fansubbed anime episodes
youtube.com

Youtube (For a combination of watching PVs and weird viral videos)

ModTheSims2 (Downloading sims 2 stuff for my game. Usually hairstyles and clothes. :p)

GiveawayOfTheDay (daily shareware downloads that are provided for free by the developers.)

Television Without Pity forums (Some funny commentary on current shows, though the consistent snark can be overwelming.)

DeviantArt (I still can't believe how painstakingly good some of the fanart over there is.)

Livejournal (I'm too lazy to keep a journal anymore, but there are some interesting communities there.)

Google (Of course.)

I recent site I found is called BestStuff (aka Best Stuff In The World) It's a wonderful time waster.

Jpopsuki, Too Fast To Live.

Baka-Updates, Mangadownloads.

GTplanet, Initial-d.com.

Scanlovers, Facebook and others.

http://bittorrent.frozen-layer.com/

http://www.hongfire.com/

http://datorrents.com/

http://www.tu.tv/

http://www.youtube.com/

http://darkclub.org/ <--- this is my website (Spanish)

google and engadget, and some gadget sites that I can't recall the name (since there are so many of them :P)

www.hotmail.com.... mail, it is indispensable!
www.hwupgrade.it
www.tmaxclub.it ( ah my bike, i love it! )

these are my home page on Ie7

Youtube.com, for AMV and music video
www.adunanza.net an emule versione only for Fastweb users
www.microsoft.com I have Vista SP1, i Want all the update immediatly