Fountain of Knowledge

Well, I think it could go either way. Nice answer, huh?

I think you could use the name if you think it is really relevant for your story. Nothing wrong with it, specially if you don't think it's going to be a classic anyway. The thing is, I think almost everyone that has written a classic doesn't write it knowing it's going to be a classic. Granted it only happens to a few, but still, it could end up being around more than that.

Mostly though, I would ask yourself which one you think will come across better to the reader, the description or the name. Even though Hot Topic is a well known store, what if you have readers that don't know about it? Or what if they already have a preconceived notion about the store (for whatever reason) and that opinion gets in the way with the story? Granted it could also help, but that's just where my thoughts went.

Sorry for the vague answer!