At $35 million I think you can make a number of arguments that this is a good purchase – user data, page traffic, ad network. I am unsure how to factor in brand value. Myspace has a huge brand awareness even if it is mostly negative.
like you acknowledged, i'm not sure how much weight i'd put in brand awareness when many view myspace as a laughingstock these days. plus, all that traffic is ramping downward at a crazy high rate: http://siteanalytics.compete.com/myspace.com/