Want to create a list of all things you have read, watched, used or otherwise own - categorized using tags, rated and review them - and obviously share them with your friends?

Then check out ShelfShare. It is a simple application hosted on google app engine which will allow you all that and more - like exporting all your ratings and reviews using a CSV file, or subscribe to the shelves of your friends using RSS feeds.

I would love to receive feedback if this looks useful, or what would make it useful

Thanks to gerhard for testing it as a first user