Bill,
Our developers are working on the post limit bug as I write this message. The posting limit is 20 messages per day, but we've been having issues with it the past couple of days which has created problems for posters such as wolfpackvolt. I believe that we will have the fix ready very shortly.
As we continue to launch new features, bugs tend to come up once in a while but our developers tend to deal with them pretty quickly.
We appreciate your patience.
Regards,
Paul K - AGORACOM