There is a growing concern about a quality of an average post on this forum.

I like JimHazen’s suggestion:
“… why not limit them to 2 posts a day until they reach a specific number of posts (say 10). After that point they can post what they like.”

I would like to modify it like:

1) First two posts should be approved by a forum moderator.
2) Posts 3 to 10 should be limited to 2 posts a day.