Here’s something interesting: the Last.fm mainstream-o-meter. Apparently my music tastes are 41.48% mainstream, at least within the Last.fm community. The biggest boost to my mainstreamness is Radiohead, which is listened to by an astounding 103.56% of Last.fm users.

Last.fm no doubt attracts a skewed population, but I do have to say I’m surprised that it continues to differ from radio playlists and CD sales. Radiohead is a perfect example – from my sampling of commercial radio over the past few years I would say they are almost completely absent. Yet a large number of people listen to Radiohead on their PCs.

Next up is a page that tells you which movie reviewer has tastes that best match yours. I’m sure we’ve all read reviews online or in the local paper and wondered if the reviewer saw the same movie. With sites like Rotten Tomatoes and Metacritic, you’re n longer limited to the opinions of a few writers. The average scores on those sites are interesting, but still don’t always match my tastes or your tastes. This will give you some names to look out for.