rasa.io AI reads the article, the title of the article, and the description of the article and creates AI determined concepts. If an article from one of your selected sources conceptually matches the filters you have in place, the article will come into your “content pool”. If you have no include or exclude filters on a given source, every article that the given source produces will come into the content pool. It is recommended for large sources (i.e. The New York Times, Fast Company) that include and exclude filters are created in order to curate the content coming in for your subscribers.