What is...the Library Thing?

I discovered this site tonight. It appears to be similar to CD and DVD tracking sites like DVD Tracker. It allows you to "catalog" your book collection online, get recommendations, and contact other users with similar tastes. Maybe I'll give it a try in the next few weeks. There are a couple of blogs associated with it for more info.

This is pretty interesting from a library science perspective. One issue (mentioned in their blog) is how information is categorized on the web (tags) compared to the library world by LC subject headings. Worth checking out.