Cospiracy Theories based on Trends?

I have been having the feeling for a while now that conspiracy theorists have conspiracy-trends. Depending on the current subject they have, youtube is full of videos they post, fiends of mine talk about it and everything, but then rapidly the trend changes and that conspiracy, they believed in before changes into something different, and even more "brainf#@!d". I am just getting the feeling that the online community needs something they can build up weird conspiracy theories around, and bitchtalk about.(excuse my language)
Maybe I am wrong though, and there IS truth to what the claim...
you decide.