Ever seen Twitter ads that were a little too relevant to your personal tastes? You now have better tools for dealing with them. Twitter has expanded both the control you have over your data inside its mobile apps as well as the amount of insight into how the social network uses that data. Venture into a "personalization and data" section in the settings and you can tell Twitter to not only avoid tailoring ads, but to stop customizing content based on location. You can even tell it to stop syncing personalization between devices, and there's a master switch if you want to turn everything off at the same time.