Thinking about - would it be possiple and are people interrested if we could get a:second hand topic on Chiang Rai forum list?

I think it might depend on whether you are talking about collecting second hand stuff to give to charity or to sell.

I like the fact that, except for an occasional sponsor, we are not bombarded by people trying to sell things on TV. There are apparently ads, which my browser blocks, but everything else is restricted to the classifieds, and I for one like that. Maybe you should contact support to see if they would allow it or not.

Why not use the CR classifieds section if you something to sell or looking for a particular item ?

http://www.thaivisa.com/forum/topic/495601-chiang-rai-classifieds/

Bartering or swapping could be fun. For example "I have an aircon unit I don't want unit and I am looking for a sofa etc"

Note: That was an example. I do not have an aircon unit I don't want, and my ass is too delicate for a second hand sofa, even if the first owner was a refined gentleman like VF

Any old electronics or other goods I don't need anymore, I just give away to the locals