Just a writing page I found the other day, thanks to Writers Digest's lovely list of top websites for this year:
Dragon Writing Prompts
Not precisely the most-organized in the world, but it's simple, fun and it's got great plot-starters, motivaters and snippets of inspiration. Especially helpful if you'd like to try rather unconvential styles of poetry or warm-ups.
Gender:
Points: 5890
Reviews: 504