For those questioning the "power" of Twitter this might be interesting.

This morning I tweeted that I wished I had more money to advertise my new CD http://www.guildwoodrecords.com/Music.htm Banjo Hockey in Exclaim Magazine and within an hour the editor for Exclaim was following me on Twitter.

Sure, you can say; how do I benefit from that but I suggest it won't take much thinking to figure out the answer to that question.