FanFiction author copying my story!?!?!?

[The Tawashi Bus Hat]

Back when I dabbled in FF, that happened to me more than once. I finally got sick of it and deleted everything I had online and reported everyone I had found. But now, I look back on it and think...well, it's fanfiction. It's online for the world to see and you can't really copyright it or anything. Yeah, them stealing my ideas was stupid. But, fanfiction itself is kinda the same thing, right? (not trying to be offensive, just a funny thought)

Report them or bring it to their attention. Don't sit on it and get all festered.