A simple perl script to interrogate the Technorati API. Outputs blog title and url, followed by the inbound blogs (authority) count, the inbound links count, and the Technorati rank. Can be easily fed to Excel.
Evan Jacobs is one of the developers doing some really interesting things with the Twitter API. Instead of using Twitter as a means of broadcasting information, Jacobs' apps are actually gathering information from Twitter to turn it into something more useful.