Not so sure how you as a community would feel, but I would like to suggest using a messenging service chatroom, or something else.
Assuming using AIM:
Pro:
Can sell instantly. Can contact people right away. Fast response. Easily deal with what you want to do with your item.
Con:
Too many spammers. People being just rude and going into the chat room without even the idea to buy or sell.
I'm sure there are many more. Please give your opinion
