I don't know if you're aware of this, but this "mind virus" is the original definition of the word "meme" (before it got adopted to mean a particular kind of image-based online joke). See https://en.wikipedia.org/wiki/Meme

Besides that, I agree completely. Twitter is a sort of highly competitive petri dish in which only the most infectious viruses can survive, with "viruses" being 160 character pieces of text. These messages do not need to be true or actually informative to survive and spread.