Here for simple access are some links I find useful on the web:

http://www.wikipedia.org - worth the daily visit
http://www.pantheon.org - Encyclopedia Mystica
http://www.spiegel.de - German news site
http://www.theonion.com - English news site
http://antionline.com - Web Security site
http://www.golem.de - German IT news
http://www.zdnet.com - English IT news
http://www.imdb.com - THE movie site
http://www.xing.com - Business Networks
http://4players.de - German gaming site
http://earthobservatory.nasa.gov - Just nice

Messengers Online:

http://webmessenger.msn.com
http://www.icq.com/download/icq2go

Gaming and obscure stuff:

http://www.urbandead.com - Dawn of the Dead style
http://deckserver.net/jol3/beta - V:TES Online (rudimentary)
http://fumbbl.com - Know it, love it :)
http://www.xcver.com/HBBL/ - our own IRL BB league