Ha, I did something similar to Quora [1] back in 2014/15-ish while the population size was still small as well.
Currently working on using similar tech to match would-be authors with the publishers that most commonly sign book deals in their style, plus a few other projects. Fun tech, but also lots of interesting potential!
[1] https://www.quora.com/How-vulnerable-are-Quora-answers-to-au...
Post a few times and just with your text (no IP address or anything), I can pretty accurately determine who you are:
https://twitter.com/austingwalters/status/104189476543920128...
Depends on population size, but HN (for instance) is small enough.