Here are some active communities engaged in video editing. These are mainly forums and discussion board where you can discuss about video. Most of these users should be interested in migrating to Kdenlive. So do not hesitate to advocate Kdenlive on those web sites.
0.8.2 extremely slow
0.8.2 whats up?
0.8.3+git20111120 crashes all the time on Ubuntu 11.04
0.9.2 Crashes on Import
0.9.6 for ubuntu now avail at sunabs ppa
0.9.6 Screengrab failing
1 pass Vs 2 pass
10 Coolest YouTube Videos of 2012 for Free Watching and Downloading