Also need to know what that minimum post count is.  On my CRN we have a 50 post minimum before newbies get an  button, but usually let people post stuff for sale after at least 10 posts, otherwise frowned upon.  We don't have a set rule though.  Just keep an eye on anything suspicious.  Overall has worked fine, it's not like a national GIANT forum with tons of unwanted people or vendors.  Doesn't even seem necessary here unless it's being abused.  
But then again I was off MASC for a few days, only to return and find a half dozen closed threads, drama, and other b.s., lol.  So maybe I don't know what's happened lately.