Two web sites provide K-12 school teachers the opportunity to share their lesson plans to other teachers.
So frequently we hear about the disparities in quality of educational instruction between schools and school districts. I believe that it is a brilliant idea to create a marketplace by which these proven lesson plans can be exchanged.
On one extreme is the use of technology to provide a streaming video session of a noted teacher to reach outside of the lecture hall out to many others. The more practical use of technology is the exchange of lesson plans. This allows that "in-place" teacher to learn from the best and brightest and then present the improved lesson plan themselves.