I thought you guys would have said, Google.com , lol. ( that's my homepage so everytime I use the Internet or open a new browser window, it shows, heehee... )
I use Google a lot as well, but I spend more time on Youtube watching cool music videos, AMVs, video bloggers, movie trailers, and countless other videos in Music, Science and Tech, most viewed, video games, automobiles, educational, etc categories. I can almost spend my whole day watching Youtube videos...
Plus, I also upload a lot of stuff to Youtube sometimes.