Ideas for articles (hubpages)

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Does anyone else use Hubpages? It's a site where you write articles (longer than the posts on here) and get paid once you've written 5 "good" articles. I've written two, but it's hard to find something to write about that has enough substance to live up to their idea of "good". Any ideas for something I can write about? It has to be at least somewhat factual; articles about opinions aren't what they're looking for. (For example, I wrote an article about how to beat a certain game.) Thanks!