Here's an interesting way to do it from a friend's suggestion;
1. Set up a shell account on a trusted server
2. Download Putty {assuming it's Windoze for you}
http://www.chiark.greenend.org.uk/~sgtatham/putty/
3. Set up a Putty profile that will dynamically forward a
given port - let's say localhost:1337, save the session, and
open it.
4. Download FoxyProxy, for Firefox:
http://foxyproxy.mozdev.org/faq.html
5. Configure FoxyProxy to use a SOCKS 5 proxy for Myspace
and whatever other websites you desire. It sounds more
complex than it is.
6. Surf.