MusicMetric is an interesting new tool that (supposedly) allows bands to track real-time discussions about them around the web. Such a service is valuable data for a band, as it can be used to decide where to tour and what types of merchandising to sell. MusicMetric is yet another service that is quickly leveling the playing field between good independent bands and the major record labels.
Techcrunch has a good article here: http://eu.techcrunch.com/2009/10/20/musicmetric-launches-real-time-band-promo-tools-250-free-trials-for-readers/