I am involved in this new venture which is basically business management through microblogging.
The first alpha is out. Can you guys tell me what you think? (It's free.) http://www.snipia.com/
There are similar microblogging sites that let you "communicate" or "collaborate" but as you'll see our goal is to really "coordinate" the business or project and still allow the public views that people expect for a microblog.
Love the idea, I do see why the other guys have commented on the site being a bit bland, even though it is a service directed towards businesses. Shoot for something more web 2.0, because really that is the service you are offering, twitter like. First impression matters, get the site going. For now I will recommend this to business friends to try out.