Blog Frog – public group blogging

I have set up a WordPress blog at https://www.blogfrog.co.uk but I have made it multi user. The concept being you register and post anything you want so eventually when many people post different messages, ideas etc you get something new everytime you visit. I am hoping some people would be willing to start using Blog Frog and encourage this concept, all articles are currently moderated before being posted but I intend to allow people who post 10 non-rejected articles to go straight to posting (no moderation). If you feel you could help with this project be it you can promote the site, know the code well, or want to help with moderation (not expecting moderation to be an issue for a bit) then please get in touch.
I would like to hear everyone’s views on this as I feel this is a generally unused concept. There are things like shoutwire but they focus on news rather than a group blogging effort.
Thanks a lot!