TimeBridge / MeetWith.me evaluation

I'm trying out MeetWith.me. It looks at your calendar (gmail or outlook, but NOT both) and creates a web page that just displays if you're busy or not. It may work out since I'm a busy guy, but it's $15/mo.! I'm not sure if it can deliver that much value, but if it lets me cram in one more friendship / social group into my life, it'll totally be cost effective.