Hi,
I have been addicted to looking at facebook groups that are related to buying/selling, as well as these threads in forumosa, but recently I realized that there is no good way to filter / search for things on facebook or forums, or post items with individual descriptions and have them display properly with other items that others would like to trade, so I created something an application for this with Ragic:
You’re welcome to check it out & post items (it’s free - just remember to use open id log in). Would appreciate the feedback as well.
http://www.ragic.com/postlisting/listing/1