I came across this rather interesting app that I will add to the left hand side side panel for the time being
meOwns is a social tool that keeps track of items you own based on your interest. I think fun bloggers as well as finance bloggers would find this social site rather useful.
Add to the fact that there are widgets that enables you to put it up on your blog as well as on Facebook, this makes it good for your friends to see what you own and so they can request it from you.
Do give it a try.