Marketing through last.fm

I have had an account on last.fm for a while now. I send most of music listening to it. A few days ago I got a friend invite from TheHijacker. Looking at the profile it seems this is the profile for a previous member of Dodgy called Nigel Clark who decided to send me a friend invite because I was one of the top listeners to Dodgy in a last week (25 listens). I also a day later got a private message from him saying I should visit his website. I believe he it trying to promote his new album 21st Century Man. To be honest I don't mind this sort of promotion much, as it is obvious that I will quite happily listen to Dodgy and so will probably like his new album. This sort of promotion also isn't at the moment automated and so he obviously feels it is worth his time sending me the message. However I signed up with last.fm because it allows me to find other music rather than have it pushed on me. Although I'm guessing that Nigel Clark hasn't yet reached a big enough critical mass opn last.fm to be recommended to me as other people aren't yet listening to it.