At some stage we'll be revamping the Classifieds section, totally rebuilding it. Till then I think the simplest way to give sellers a pos or neg rep is to simply post in the Feedback thread there.
All we are talking about is the Classifieds, yes? So it makes sense to have the feedback / rep right there. I wouldn't want to see a system implemented where a member gets some sort of rep tag that sits on their name everywhere they go. Diss one guy then you are permanently tagged 'D-minus' or whatever.
I don't see what's wrong with having a list of seller's names - a thread for each if you like - with posts giving a rating from A to D. You'd title your post like:
PhillySam - D
Then in the text write how he posted it 3 weeks later and sent short on the items. Or,
NiteRiderz - A
Received 2 days later, all as advertised, well packed.
Seems enough to me. So it needs that whole area sorted out. OK - how about this: we create a new sub-forum, Seller Feedback. In there, we move all those feedback posts. There is a thread created for every seller.
To post and give feedback, you search for the username. If you find a thread for that user, you post in it. If not, you start a new thread. You title your post as above, so it's really easy to find, and people can get a good idea of that person's rep just from scanning the post titles, also you can search the name easily.
Yes or no?