I like that idea. Most hosting sites have a place were you can show your website off. Mabey if the required post count was like 15 or something before you can start a new topic.
Well I don't see any harm in advertising in the showcase, people at the end will decide wether or not to join or visit the website. With strict rules, anything can be done. I have a site that is strict on this and it works miracles.
Nice Job, hopefully we do get it. If you wish I can be in charge of keeping it neat without being a moderator or something. I love this place and to keep it neat is a priority.