Google loves Wikipedia and it is an old trick to add your site to the External links within your category (doesn't count for SEO, but gives a small amount of direct traffic). But did anybody notice, that Myspace pages popping up all over the Google search results within the last few days? I just noticed that Myspace ranks for top keywords with their User URLs (www.myspace.com/keyword.html) and the results are not really relevant (e.g. songs from bands, that have nothing to do with the product). Not sure why this suddenly happened, but it is very odd, especially that Myspace signed a major distribution partnership with Google. Maybe the 435 Myspace DMOZ entries effect the value of Myspace as well, maybe Google and Myspace just want to catch up on the Facebook hype, maybe something else?
Not sure if anybody can tell, but (if you haven't done so) make sure that you register your main keywords as User names with Myspace. It can save you a lot of money over the long term.