What if Facebook or Twitter decided to shut down one day?

According to Twitters terms of service, you own your content, but Twitter does host it and they have control over it regardless of whether or not you own it. Jesse Stay talked about this with WebProNews in a recent interview The concept of Twitter or Facebook shutting down seems farfetched, but the same thing probably couldve been said about Geocities 12 years ago. Now Yahoo has shut it down. Its just something to think about.