If we can get some good examples of social networking sites interoperating with each other using W3C standards like the ones you mention, then things will get v

If we can get some good examples of social networking sites interoperating with each other using W3C standards like the ones you mention, then things will get very interesting with the introduction of the GDPR in Europe. Specifically, it includes a right to data portability, with the wording: "In exercising his or her right to data portability pursuant to paragraph 1, the data subject shall have the right to have the personal data transmitted directly from one controller to another, where technically feasible." https://gdpr-info.eu/art-20-gdpr/ https://gdpr-info.eu/art-20-gdpr/ Conceivably, a Facebook user could demand that Facebook support automatically sending their Facebook posts to their friends on third party social networks. I imagine that an EU court would not be very sympathetic to Facebook claiming that it isn't technically feasible for a (large, monopolistic, American) company to support this use case when small open source (European?) competitors have implemented the W3C standards with no trouble. Once Facebook is forced by the GDPR to publish data to competing sites, I imagine it will feel compelled to also support receiving data from people on those sites, otherwise the one-way flow of data would put Facebook users at a disadvantage. But then there is basically no reason to use Facebook, as users of competing sites would still be able to see and be seen by their friends on Facebook. This is such a disastrous outcome for Facebook that I wouldn't be surprised if lawyers at Google (or some other big company) were already working on the legal complaints they are going to launch come May, when the GDPR comes into force.