I don't know if this has a name, but... ICQ-like "searchable" instant messaging. Let me explain myself. In the late 90s, there was an IM client called ICQ. For starters, its UI was leaps and bounds ahead of anything to be seen in the next decade, and it had functionality like bots or groups, that has again become widespread a few years ago. But what I'm talking about is the fact that I could look for "female, age bet…
"females who are single, age between 16 and 20, who likes writing" would have returned precise results.