How were you introduced to the concept of the Chemtrail conspiracy?

1) Someone (a friend, family, etc.) told me about Chemtrails
2) I visited a website and they talked about them
3) I notice them first in the sky and started to ask questions
4) I was reading about a different conspiracy and they mentioned them . . .
5) I saw a discussion on a YouTube video
6) I was watching TV and there was a news story about them
7) I was watching TV and I saw a documentary on the History Channel
8) I had a dream about them and just knew
9) Other . . . please specify