An idea I came across in Niki's Learning Technology Blog that I really liked was the idea of using 12 second video clips in Twitter.  It is microblogging, but in video format.  This was suggested as a tool for English language learners, but I think that there are some other great ways it can be used also.  For example, students who are learning a language in school such as Spanish or French can do a class blog, not posting in type, but in short video clips, thus practicing speaking the language and practicing comprehension when others speak it.  My sister is a speech pathologist, and microblogging through video clips could work well with what she does, as it focuses on speaking as communication, rather than typing, thus giving the client further practice.

As for microblogging in general, while I am not a fan of resources such as Twitter, they do have one aspect that appeals to me that is addressed in Scribd that really appeals to me;  instantaneous response.  With so many people having smart phones nowadays, and our constant connection to the internet and social networking sites, Twitter can offer the immediate gratification that other methods of communication do not. If you have a Twitter account set up for your classroom, and your students subscribe to it, you have a direct means of contact, especially if students have their tweets sent to their phone, as many people do.  This provides for a more constant flow of information and ideas, and the ability to react and respond to those ideas from virtually anywhere.  However, in my opinion, the jury is still out on whether or not Twitter should be used in the classroom in regards to internet safety.