Using third party services like Gmail, Yahoo, Facebook, Flickr, etc… to communicate and work online is very convenient but also has huge drawbacks: even ignoring the privacy issues exposed by the Snowden affair, you become completely dependent on a private (foreign) company that may cancel your account in any moment, because they basically feel like it, or even disappear in a few years (Facebook or Google too big to fail? That’s the same thing people said of Geocities or MySpace just a few years ago).