Squirl

Squirl is web-based community for collectors where they can catalog, organize and share their collections with others. It helps them to stay up-to-date, meet like-minded collectors and get credible feedback on their collections from others.

“Squirl is the best way to catalog, organize and share your records, movies, books, comic books, stamps, coins, or practically anything else.”

Basic Things you can do on Squirl

Catalog, organize and show-off your collections. (music, DVD, model cars, coins, etc.)
Browse collections by: featured, recently added, or by tags.
Join groups with similar interests or create one your own.
Comment/Rate collections and items
RSS options for everything (new collections, user updates, new category additions, etc.) For instance, you can get notifies as soon as someone tags an item with a particular tag (i.e. BMW, coin, doll, etc.)
and more …

Go to Squirl (http://squirl.info/)