How does it find the high similarity between "dang" and "dangg" when the "dangg" account has no activity (like comments) at all?

https://antirez.com/hnstyle?username=dang&threshold=20&actio...

Probably it used to have when the database was created. Then the comments got removed.

It has a [dead] comment that says

> Please don't post unsubstantive comments to HN. [link to guidelines]

My guess is it was a parody/impersonator account.

You can enable "showdead" in your profile to see [dead] comments ans posts. Most of them are crap, but there are some false positives an errors from time to time.

I like to leave dead comments on. It helps me feel better about living in a cultural wasteland to see that people who probably live near urban centers can be just as dumb! It really does help me worry less.

> Most of them are crap, but there are some false positives an errors from time to time.

HN silently black holes any comment made through a VPN, so I would expect a decent amount of false positives.

There is one dead comment by that user that mimics a "dang" comment. https://news.ycombinator.com/item?id=16800379 ("Please don't post unsubstantive comments to HN.")