We built an open source platform (qbix.com/platform) to power social apps and security was a major consideration. By default we encourage a user to type a pass phrase and give them suggestions based on {{possessivePronoun}} {{noun}} {{very}} {{possessivePronoun}} {{noun}}

But they can also attach another source, such as inputting an api key to NewsAPI and then to generate each suggestion we take a random news article and take three consecutive words from that article.