So how do you waste your time?
Here's a list of webcomics that I read, and I've got capacity for a few more.
Perry Bible Fellowship: If you don't know these, you suck.
http://pbfcomics.comXkcd: Does not need introduction
http://xkcd.com/Penny Arcade: Neither
http://www.penny-arcade.com/comic/Cyanide and Happiness: Not for the weak of heart
http://www.explosm.net/comics/DM of the Rings: What if LOTR was a D&D game? Project is finished
http://www.shamusyoung.com/twentysidedtale/?cat=14Darths and Droids: The same for Star Wars
http://www.darthsanddroids.net/Irregular Webcomic: Updated Daily. Lego stick figures.
http://www.irregularwebcomic.net/Abstruse Goose: Less compiled XKCD clone
http://abstrusegoose.com/Order of the Stick: D&D with stick figures.
http://www.giantitp.com/comics/oots0649.htmlLegostar Galactica: Battlestar Galactica and etc in Lego.
http://legostargalactica.comicgenesis.com/Captain Testosterone & Perlen vor die Säue: German nieche webcomics. Focus on movie clichés.
http://attackofthe50footcomics.horror-perlen.de/Under Power: Manga Parody. Doesn't ever get going.
http://underpower.non-essential.com/