I don't go on kinkmemes, myself, because I don't find them all that interesting. But I've seen enough complaints about how XXX was in this story, when it should have been fairly obvious that XXX was in that story, or people complaining that XXX was written about where someone could see it (and do we ever get that kind on FS a lot...), to think that it must be fairly common, because I hate to think that there are that many people out there who, being aware that XXX was out there, were ditzy enough to miss all the warnings that are generally put out there.