What is it?
The Chilling Effects Clearinghouse is a huge database of copyright cease and desist notices submitted for your viewing pleasure and maintained by a number high profile academic institutions.
Why is this interesting?
Because it's a huge mess. This is the same problem they ran into with Dollars for Docs – multiple sources, different formats, lots of names with slight variation and not enough eyeballs working to clean it up (I make it sound so easy! hah). Needle's de-duplication functionality works really well in this instance.
Where is it going in the future?
I just stared working on this domain so it's a little early to tell – whatever insight that can be gleaned from this database will eventually make its way into a publication of some sort. You know, with all that free time I have : \