I don't plan on joining, but my suggestion would be X number of posts, weekly. This will help with allowing discussions to go on for a few days and then moving onto the next batch of blogs. This will also help more people get into the conversation since not everyone logs on to the forum everyday. The number of posts to read per week should probably change, since towards the beginning MMM had few posts that were more like one big post.
After writing that, maybe I will join.