How can I search for certain interests in profiles to find people nearby on MySpace and Facebook?

I'd like to be able to find people who have similar interests near me by searching for certain terms within their profile pages, but both of these websites are set up so terribly I'd need a For Dummies book in order to find what I'm looking for if it exists.|||in myspace this works for me, i go in the search and type thing i would like to find, somethign like this, if u look for a girl" location,female,age, and pops ups bunch of girls meeting those matches! u can type music u like, like bands, shows ppl who has them in their profile n stuff