Free, hosting of your own small Drupal site (with ads). 1GB space; 50GB traffic. Easy to design with theme templates and layouts. Multiple roles and permissions could aid classroom sites. Hope this succeeds.
Create and test a mobile app. Author app. Host and promote your app. Link to FB, Flickr, Twitter, Picasa, and other media sites. Create a mobile version of a regular web site.
Host up to 3 apps like Drupal or Joomla or WP for free. 1GB storage. Major apps are easily installed for you. Get a domain and point to this host. A new business model for hosting?