Shareology.org– A free resource made available by the Nicholas Foundation. There are a number of things going on there but the one I was really interested in is designed to enable large scale resource sharing, communication and cooperation among teachers.
We were starting to cobble together a way to share, tag, rate, and review lesson plans and resources between our Instructional Technology Trainers. Shareology is offering a hosted package designed to help teachers do exactly this. It also supports variable levels of security, easy to set up user groups, blogging and discussion boards.
The fact that it’s free and hosted would make it ideal for a lot of places with over stretched IT departments and tight budgets.