No wishful thinking. No statements that aren't supported. No self-beliefs pushed forward as facts. An example of a post that would convince me is something like this:
"XYZ has been shown (citations) to do ABC. People who practice XYZ have been shown to experience less disasters (citations). Therefore, I advocate that more people learn about XYZ, because it will help them avoid disasters. Also, this positive experience with XYZ has been demonstrably shown to convince normal, skeptical non-practioners of XYZ to begin practicing XYZ (citations). Therefore, XYZ will eventually lead to a worldwide reduction of disasters".