Yep - good idea - although in my experience people very rarely read forum rules and regs lol
The only reason the rules have been brought in for posts in the for sale and wanted section is just to protect folk. Internet scams are becoming more commonplace now, and more and more on bike forums, so to protect older members and newer ones so this is the reason.
The new regs only affect the for sale and wanted sections so the rest of the forum is as it always was.
The guidelines have been pinned in both sections and also in the general section so really theres no excuse for newbies not to read them.