Chemtrails are toxifying the atmostphere and poisoning the planet U.S. West Coast completely contaminated with Fukushima radioactivity The Feds are intercepting cellular and online communications Monsanto = Death Fluorinated water kills Vaccinations kill Mermaids are real (see YouTube) Collecting rainwater is becoming illegal across the U.S.
GMO Cloned Babies Luciferian Agenda Existence of transhumans Illuminati children are sacrificing their classmates Technocratic Revolution is happening Feds are stockpiling bullets and coffins Muslim Brotherhood wants to control our schools
I don't know which ones, if any, are true or have a hint of truth (Monsanto?, Fukushima?), but most sound pretty crazy and I don't bother to read about them at all.
For the most part, it seems the people who spend most of their day at home, online, and prone to supernatural belief, are the ones who start believing the craziest conspiracies.