Twick it is designed to be sort of a version of Wikipedia. The difference is that every entry has to be 140 characters or less.

In the future, once there are many entries, it might be a great source of information for English Language Learners. Now, however, it’s an excellent opportunity for students to identify topics, develop their own 140 character answer or description about the topic, and then post it to the site.

I’m adding it to The Best Places Where Students Can Write For An “Authentic Audience.”