Blip.fm is a new micro-blogging service, from Fuzz, that has a truly brilliant unique selling point - music. Twitter asks 'What are you doing?' but Blip.fm asks instead 'What are you listening to?' You simply search for a tune, scroll through a list of results, preview the ones you like to make sure it's working. Add a message and 'blip' it to the world.
Music is clearly the killer feature here, but that's not the only great thing about Blip.fm. It's really easy to find and add people with similar musical tastes. After each post, Blip will show you a handful of others who have recently played the same song, and ask if you want to follow them. Additionally, the main page dynamically loads in new blips, without you having to reload the page. All micro-blogs should do this, but it's particularly hand on Blip as it means you can just keep listening, indefinitely.
I do wonder about the legality of this, but ultimately this could be a great tool for music discovery. Let's hope it survives!
Here, have an invite to Blip.fm, on me.