[comfymatrix]

I don't get this? It checks against a limited list of websites if a username is taken. So what? This is hardly doxxing or "smart". Simply a faster method than the manual way, except it doesn't exhaust all avenues of search.

[green1]

I'm surprised I had to scroll this far for this comment, which was exactly my thought after viewing the Github page.

From other comments here I assumed it did something sinister/sophisticated (matching photos, avatars or even text analysis) to try and tie a poster at one site to another site.