I'm not a conspiracy nut but I thought I'd look into this chemtrail deal to see what it was all about. Upon investigating I found several things that definitely caught my attention. I thought who better to ask than actual pilots as avionics is not even close to my field.

1) the trails seem to form distinctive shapes. Common shapes include "X" shapes, "Z" shapes, "A" shapes and grids. Is this just coincidence even though it shows up all around the world or deliberate?

2) There is clear evidence that shows periods of the trails to be consistent then a sudden switching off into normal contrails that dissipate within a few seconds from the same aircraft.

3) Clear sign of two planes side by side, one leaving a persistant trails the other a normal contrail that dissipates in seconds.

This is the youtube video I looked at. If anyone cares to spend 10 minutes of their lives and watch it, I'd like to get your opinion. YouTube - 3 of 27 Chemtrail film: Don't Talk About the Weather