Only one company/site discussion per forum

[postcd]

I searched and did not found.

Many forums uses this, in some cases we want to talk about some website/system/program only in one thread. Dont let users create multiple topics for it.

In my oppinion it can be limitted only when topic has uniform titles like:
site1.com - reviews
site2.net - reviews
site3.biz - some text

But there are already Mods which ensures proper topic title.....
So when combining with this one topic/forum limit Mod....

Any ideas if a Mod can be created/exist for this?