Posterous

Posterous (http://posterous.com) is a free, web-based microblogging platform that focuses on simple design, ease-of-use, and social networking. Instructors and students alike could use Posterous like any other blogging tool, the advantage being a potentially smaller learning curve. Free account sign-up is required, and an iPhone app is available for blogging on-the-go. Here is a sample Posterous site by Decimus: