Not sure if this has been covered before.
If you find someone online (eg here on BH) that you recognise, do you pm them to tell them you know who they are?
Do people pm you to say they know you IRL or should you expect them to?
I messaged someone I recognised here a while back thinking it was etiquette and while I don't change my posts knowing they are in here, I wonder if anyone else knows me and just hasn't said.
I'm pretty open on here and easily recognised by people who know me IRL.
I guess after all that, what's the etiquette on identifying someone?