There is a rule that, quite frankly, I've been bluntly ignoring ever since it was introduced. Whenever you upload a new image, it says that you shouldn't use the entry name as a tag. Why?
The point of the tags is to make it easier to search for images. And the entry name is usually the most relevant keyphrase for an image, since it is usually the name of the meme or the TV show or the event that spawned said image – in most cases, it makes no sense not to add it, especially since the rules also tell you to specify the source and context of an image. Otherwise, you wouldn't be able to find an instance of a particular meme with a particular character, because while the character is tagged, the meme isn't; you wouldn't be able to find a particular artist's drawing of a particular show or comic, because while the artist is tagged, the subculture isn't; etc.
I've always assumed that this was just a means to stop people who just lazily put the entry name and nothing else in the tags, that there is an unspoken "only" in the rule. That it's okay to use the entry name as a tag as long as you provide other relevant tags, which is what I always do. And seeing how many others (mods included) do the same, and that I have never received a comment or a warning from a mod telling me otherwise, I always thought that my assumption is correct. However, occasionally I notice that some scrapbooker would edit my image and remove the entry name.
So I thought I should finally come here and openly ask if it's really okay (and if no, then why the hell not?!), to clarify this matter once and for all.