Not so sure about that either. Personally I am not a fan of posting memes anonymously. The feature is often used to post political memes of a very controversial kind. Of course, everybody is entitled to their opinions, but if you want to have the nerve to post a meme like that, you must also have the nerve to take credit for it, and bear people's anger if the meme was controversial. The fact people flag it as anonymous already shows that they may be a bit afraid for the community's response, I think, and they may know they are really throwing some sparks in a crate of TNT....