Nanadee, I have no idea why these people are doing that. But no, I don't think it's a new method of communication. I think it is deliberate and I think it may be the same few people doing it, regardless of what their Yedda profiles would lead you to believe.
I actually posted a question about that very subject. Unfortunately, we never found any solutions, although some of us have taken to commenting about their stupid answers and/or giving them 'Not Helpful' marks.
Too bad it's done nothing to run them off, as yet.