I know many here are Christians and have children. Myspace is way too nasty for unsafe for kids and as an adult I just don't like Myspace.
http://www.shoutlife.com is a free Christian owned and operated social networking / community website.
I met with the owners this summer and found them to be very nice guys. The whole thing is pretty much family owned and operated. (a couple of brothers, brother-in-law and their spouses.) They monitor all pictures and posts.
Give them a shout.