We noticed the students responded most to things within the first few days (7-10) then slowed their responses as time passed. Is this because I did not properly utilize these technologies in my classroom? I'm not sure, but it is something we observe…
A colleague and I did a short essay on this.
http://www.ncsu.edu/meridian/winter2009/List/index.htm
We used Moodle, Twitter and Ning in combination. It was not very quantitative, but I think the whole setup worked well in my classroom.