This was really interesting documentary about the chemtrail phenomenon. (It's in 27 parts (!!!), so if the playlist doesn't run on it's own, go to the source) The German Army has admitted to conducting experiments, dispersing material into the atmosphere, so I don't think it's all pure "conspiracy theory". Now WHY they would do that, is another question. Some say it's for HAARP weapons systems, some say it's for weather modification, due to global warming. Whatever the reason, the trails DO look odd in my opinion.

http://www.youtube.com/watch?v=FiUMfsR28SM

scary.

This is something people have always talked about. Being able to make sure the weather is perfect for the long weekend. Wouldn't it it nice. Reality is a lot more scarier than than, isn't it. What is floating up there around us?

The largest flaw to this conspiracy is that both persistant and 'tad pole' trails appear together. Now if one finds these trails coming from the same air ports then it disproves the whole thing because they are using the same fuels. Its a little hard to swallow the idea that airline workers are keeping some secret about additives to certain planes and they wouldn't speak out about suspicious things like special mixtures or fuels for certain planes.

At least, I found that as a glaring problem with this conspiracy.