I first ran across Ning last summer, and was figuring something like this group would come along, and I'm glad to see it give me an excuse to play with Ning.
However, jumping ahead 18 months, who owns the thing?
Also, the URL's to the blogs here like this -
http://socialauthority.ning.com/profiles/blog/show?id=xxxxxxxx etc.
Are those even spidered? Can they rank and pass juice? it would might make me nervous creating too much original content here.
Of course in the meantime, we all have the "right now" benefit of these forums, lots of tips, digg / stumble / onlywire me groups, helping each other etc. that come along with a growing community, which is all good, but I'm not sure I'll be creating a blog here.
Jack, I joined because of you and your reputation...
I suspect that you just figured that Ning looked cooler than anything you've ever seen, so why not try it? - but I'm still curious why not do it yourself?
Aren't you concerned this might end up in the same boat as having a heavily trafficked free blog at Wordpress.com?