Where should I start these threads?

Have been collecting promo & pro shot photos and stage passes for decades.
There are a huge number of fakes out there and it's getting worse since cheap and better quality printers are everywhere now.

I'd like to start a thread that documents examples of fakes and how to tell if something is original or not.
It wasnt clear where best to put something like that. Can someone suggest where a couple of threads would best go?

Are they a How to... or an eBay...or T-shirt talk?

Thanks
MrCrispy13