Author has written 10 stories for Harry Potter, Saints Row, and Avengers.
I have an attention span problem. Very little ever gets done. Lots started, most unfinished. Hell, I can get bored by page 4. But I have ideas. Some poor, some good. I read, a lot, and then some. I'm not really going to post more than a chapter on one idea, I get bored of thinking about what comes next. If you like an idea, and think you could run with it, feel free. Some ideas are "inspired" by other fanfics, but, to be fair, their ideas generally came from somewhere.
I have to recomend story 1260679, Realizations by Wishweaver, for having a foolproof explanation for (A non evil/manipulative) Dumbledore not knowing Harry was .
If I use an idea of yours, and forget to credit you, sorry. But its only wrong if you take the whole thing and claim its yours.