Librarything - share and catalog your book collection

[Omnius]

Hi,
Do any of you guys use Librarything.com?
It is a website where you can catalog your book collection, and share it.
You can tag and rate your books as well.

My collection:
http://www.librarything.com/catalog/OmniusNL

You can sign up at:
http://www.librarything.com

Cheers!