They were a world all their own in the days before Craiglist and Grindr and Scruff.
I remember when you had to run print ones in newspapers and magazines, and there was this elaborate procedure involving ad numbers and passwords for calling in to see if you got any messages. If you wanted a picture, you were prepared to pay for it, handsomely.
And close to the personal sections there were so many of those 1-800 numbers like “The Leather Line” advertised where you could get a person, I guess, if you didn't want to wait for a response. That was as close to immediate gratification you could get in those days without leaving the house to try and find a hook up at a bar.