All I can tell you is that I posted these pics for this member after he/she sent me, and asked me, personally what I thought it was. I'll try and remember who it was and send him an email notification. Maybe he will log in and answer your questions.
And as far as trades, sales, etc. Palmpedia is open to just about everything. It is a resource for Palm/Plant people to use as they wish. The wiki format is identical to that which is used for Wikipedia, so anyone can do just about anything they wish. The forum is just for ease of communication.
I am trying to get enough interest from people who sell things to set up a section for pages of their offerings with photos, etc. I would also like to see people set up personal pages of their gardens, nurseries, travels, or other palm or plant experiences.