Micro-blogging // Hate It or Love It

I've been wondering how long it would take to see various iterations of Twitter's micro-blogging revolution, other than on sites like Facebook and LinkedIn, who have basically just added the same functionality to their own. For example, Musebin describes itself as "1-line music reviews." The site — currently in semi-private beta — has been called Twitter x Reddit, but specific to music. What do you think? Is the abbreviated-interaction format appealing? Do you expect to see other variations on the micro-blog theme? Or will people's desire to run their mouths win out?