An interesting thing from this week's sponsor, Ingram. Not for everybody, but if it's for you it's probably of great interest.
They've released IngramWire, a simple desktop application which shows (as their words) "hot news on books and trends from our buyers to you". You can filter by type of customer (librarian, retailer, publisher) and even by Ingram distribution center.
It runs on Windows and Mac, but it looks like the Windows version has gotten more testing. Here's an archive of past updates so you can get a sense of what it will show you, and a FAQ regarding technical issues.
To install IngramWire click here and follow the instructions.