There are few online tools which can give you a string of ideas for articles as quickly and brilliantly as AnswerThe Public. Whatever market you’re in, I’d bet it can come up with something you hadn’t thought of.
All you then have to do is to check out the Google results for the idea which interests you, and see what’s already out there. If the best the web has to offer isn’t really up to much, here’s your chance to step in and clean up.
AnswerThe Public is free up to a certain level of traffic. Unfortunately the paid-for, unlimited search plan is quite expensive, but if you can get your searches in while they’re free, it’s an awesome resource.