There was a chemtrail symposium in Belgium this year, may 29th. Organized by the Belfort group. Here is the video:

CHEMTRAIL SYMPOSION - 29/05/2010 on USTREAM: International Symposion The illegal spraying of harmful substances in the atmosphere by airplanes, also known ...

SupaHumanDignity: Conférence: Chemtrail symposium - 29/05/2010 (GAND - Belgium)

And here is a very interesting report by the Belfort group on Contrails.