actually it's funny you say that. There we 2 planes flying at the same time where we were all looking and one of the jet's contrails were disappearing and the other one was doing them in a tic tac toe and they stayed until we left (like and hour). They spread out and got a little wispier, but they defiantely weren't going away like the other jet. The contrails disappeared almost immediatedly.

My friend has been telling us about these chemtrails for months and now finally today we saw them. I don't really believe the hype. I just know that I saw what he was talking about and what was mentioned in that link. They have pics on the site, too. It's just ironic.