I'd like to think coming up with new ideas for article hubs is a God-given talent. But realistically speaking I don't think so. You could say I have a very active and imaginative mind for the most part. The real truth is that even though I love to write articles that have to do with science or about medical topics. I tend to save these kinds of articles for last, for my audience, because I believe they contain the best value and are more valuable to a majority of folks looking for answers about these topics. Other articles that I write just come to me, based on hobbies that I am involved in, like birdwatching, stargazing or issues that have to do with the environment or nature topics. Other articles that I come up with are usually created from scratch on what I have learned from watching a friend tackle a certain project. An example of this may be fix something mechanical on his car, or watch someone make a tasty dish. In this way I have a mental snapshot of what is involved, take mental notes and voila....a fresh article is produced. This does not always work for me and like most other freelance writers I am no different in terms of suffering from writers block, from time to time. Hopefully I have helped to answer your question and good luck with your writing within the community as well.