Don't contribute anything relevant in web forums
> Typically, those services don't provide any possibility to extract or synchronize content. They don't offer open APIs that allow users to choose among different and open user interfaces.None of this is true. All these services have pretty fully-featured APIs and several independent clients.Even otherwise, the fact that some of them may not exist at some point in the future is a terrible reason to not use them at all. I still find tons of relevant content in hosted forums from the 90s and 00s, and more recent ones like Stack Overflow and Github.I'm pretty confident that most of the services he is complaining about will last longer than his own blog post.