Cool. I kinda grok the idea of semantic scrolling but I'm having trouble seeing it in action in the site. I think it would be useful in cases where I want to become an expert in a given topic and therefore I want to peruse lots of related ideas and create the possibility of serendipitous new neural connections. As for technical documentation, usually people want to find certain information as quickly as possible so that they can get on with their work, so I don't think semantic scrolling would be a good fit on most docs sites. I.e. they won't have the patience to semantically scroll in order to find the info they need.