That's actually a pretty good idea. Kind of like an official @mention/#hashtag for an exact topic, if somehow wasn't abused by people, would definitely improve

That's actually a pretty good idea. Kind of like an official @mention/#hashtag for an exact topic, if somehow wasn't abused by people, would definitely improve related search results. Navigating user intent algorithms is getting more difficult. Does schema.org etc support ids beyond keywords/categories? I guess the id could just be a keyword. Maybe a public registry where you claim an id for a topic, similar to claiming a yelp page or an ISBN number. Then anyone posting related content includes that id. Popular topics could be grouped. You could generate memorable ids for most known topics/products/etc, and people just utilize them organically, robots could apply them automatically over time also. It's especially bad for words with many definitions, like "bridge repair", could mean a dental bridge, guitar bridge, or a bridge over a lake.