Exfm launched as Extension.fm in March 2010 with a Chrome plugin that allows you to scrape MP3s from music blogs and create playlists from that sweet, sweet residue. The service rebranded its app as exfm version 2.0 last month, and added nifty integrations with Twitter, Facebook and Tumblr (which made it much more social).
The introduction of a Labs department is just the latest innovation on the startup's part -- "[this is] where we’re going to launch cool ideas from our users that are still a bit away from being integrated within the complete exfm experience," the startup's blog says.
BlogFinder (a.k.a. The Super Awesome Music Blog Finder Thingy) allows users to enter in their Last.fm IDs in order to garner a list of music blog selections, courtesy of EchoNest's API (EchoNest is also responsible for MTV's new music discovery service).
Granted, you have to be an avid Last.fm user in order for this to work (and there are still bugs, either way), but it's a pretty cool idea. Founder and CEO Dan Kantor says that the startup would love to get BlogFinder working with other services in the future.