I think microblogging as a concept has some merit. Everyone forms thoughts differently and for some, Twitter just works.

I think when social aggregations catch on more people will be more free to choose whatever medium of expression they choose and be assured that they are communicating with the people they want to communicate with.In fact, I really see a need for the "Sharers" if you will to be able to create their own outbound social feeds that aggregate the many forms of self-expression a single person may want to partake in.