I'm going to go with Bizintros.com it's catchier, easier to say, easier to type, and sounds more professional. Business people aren't interested in MySpace, so don't try to fashion your network after them.
I would pick mybiZZone (use double ZZ in different fonts and sizes so that people easily remember it:)
thanks for the replies. I was leaning towards MyBizZone. the three word combo has some frequency on msn. why wouldn't biz people like a "my space" setting with other biz folks? my space has a tremedous amount of teens. its difficult to network there.
First I have to agree with mybizzone because it's catchier and easier to remember. As for the biz folks and my space I wouldn't listen too much at what people say but I'd trust the research you've done. Good luck