I'm working on a project that I could use some input on. I'm working on what's going to serve as a sort of etiquette guide for buying, selling, and trading coin-op machines and equipment. The basic breakdown will be how to act as a buyer, how to act as a seller, and what to look for in each type of deal.
It's not going to be a list of things that people should stop or start doing, but a general guide of how to approach the hobby properly. If it kind of balloons and grows longer than I anticipate, I'll probably get some images created and make it a .pdf download for people to check out.
So, list the things you can't stand the buyers or sellers do. I'll add them to my list of things and build my base for writing from them.
Examples
-Listing items as rare improperly
-Rating things on a 10 point scale with no reference to what a 5 is
-Improperly defining a joystick as broken or not (

)
-Taking pictures in poor lighting
The idea is that this will help people to avoid getting burned by a bad deal by letting them know what to look for while also helping others properly prepare and present their own items for sale.