Since trying to navigate MySpace tends to give me a headache, I'm not really into the whole "networking" thing. Basically, if I don't know you outside of MySpace, either in person or via at least semi-regular online contact, I probably won't friend you. Nothing personal, I just don't see the point in having loads of "friends" who I don't actually know.
NOTE: I got tired of shitty bands I've never heard of sending me friend requests, so I've changed my privacy settings to not allow friend requests from MySpace Music accounts. If you are someone I actually know who wants to friend me from a Music account, drop me a line and I'll set up the connection from my end.