I wouldn't say it is all about secrecy. I would say posting as anonymous allows ones memes to be scored more fairly than if posting under a known name that may be part of a clique. It allows the memer to avoid all the convo they might not have time for. It allows the memer to jump the fence on issues to be more creative on issues. For example, a female memer can feel more freely to post a meme from a man's perspective and vice versa. It also allows a memer to avoid being caught up in the drama that is so prevalent here. Some do not care to debate every meme they make. That is pretty much my take on posting as anonymous. And, as long as it is within rules, I don't see what the fuss is over anyone posting anonymous.