Here are some other things I can recommend, having frequently wasted time in Internetland on them myself:
Air Out My Shorts - Original stories read aloud by hosts Preston Buttons and the Word Whore. While drunk.
Hyperbole and a Half - Brilliantly illustrated blog by Allie Brosh.
Jenny Smash - A woman possibly crazier than myself.
My Drunk Kitchen - The YouTube show sensation staring Hannah Hart! You can also follow her on Twitter.
The Oatmeal - Comics, quizzes, and other things with amusing drawings.
Popehat - Various nerdery, interesting legal-y thingies, champions of the little guy, especially the ones being bullied by big corporations with lots of money simply because they can get away with it.
Strange Vintage Fictions - TTN star listener Haggis Vitae makes gorgeous creepy art and writes thing on her blog. She also illustrated this book.
Total Talk Nonsense - The web page of the brilliant talk podcast of the same name. Be sure to check out Scott's blog.
Wil Wheaton dot Net: 2.0 - Wil Wheaton's blog. Yes, that Wil Wheaton.