You can put that skill to good use, helping us remove social scammers, by reporting profiles and/or content with evidence, via appropriate channels.
Do not publicly post information resulting from reverse-searched images of other users. It amounts to
doxxing if it turns out to be their real and potentially personally-identifiable information.
Do not harass users with such search results or accusations. When people get harassed with such activity, they'll stop posting or even worse--leave and take their friends with them.
There have been times when innocent users with their images on multiple websites have been attacked by overly suspicious users and their information--potentially linking to their private content--has been...