Visit these sites. That way, they may just stay in business and I may just continue visiting them.

Audiography-Livejournal community with weekly music themes and downloads.
Last.fm-Track the music you listen to.
Neighboroo-Neighborhood facts from across the U.S. Still in the process of browsing.
Rate My Professors-Professor ratings.
Come Get Used-Used book listings for a few universities in California.
Campusi-Search sites for a good book deal.
Wikipedia-Online encyclopedia edited by the masses.
Reusable Bags-Check out the plastic bag counter. I have no idea how they know.
Patagonia-Environmentally conscious clothing company.
REI-Sport and outdoor equipment/apparel.
Newman’s Own-Paul Newman’s line of food. Tasty.
Pitchfork-Indie music news and reviews.
I also read reviews at Popmatters, but nothing beats hearing the tunes yourself.
Rotten Tomatoes-Movie reviews average the scores of a number of movie critics.
Yelp-Restaurant and store reviews by locality.
Grist-Environmental news and commentary.
Treehugger-More environmental fun. I read this site fairly regularly.
PF for students-List of personal finance blogs.
Metacritic-Reviews galore. Averages multiple scores.
Epicurious-Yuppy/yummy recipes for foodies. Search and sort by fork rating.
Threadless-Awesome shirts with ironic/quirky designs.
Remittance Girl-Erotic stories with dom/sub themes. Mmm.
Good Vibrations-Classy erotic store in Berkeley and SF. Their website is full of stuff to buy and read.

My online adventures in procrastination…to be continued! Links will be added as they are enjoyed. Recommendations welcome.