Yes of course, but most of the time my ideas are somewhat "on the edge" so it's very difficult fro anybody to accept, so it's tough to convince.

Example 1 : run free software, it's better. Example 2 : what about sharing a car ? Example 3 : what about not buying useless gifts ?

I usually want to convince people not to do things instead of doing more or better. So the odds are against me :-)