Hopefully by now you won't have to be sold on the invasive practices that social media companies conduct. Websites such as Facebook and Twitter aquire so much data on users that they often know more about you than you know about yourself. The simple solution to this is to not use social media. However, that just isn't an option for most people. So the next best thing is to setup a self-hosted and federalised social media site so that you have full control over your data.