The pay is crap, most of the men want to believe you are what you say you are, most women who do it end up feeling degraded by it, there is no guarantee that by picking a 'college' girl, you will actually be speaking to a young woman, you are just as likely to be speaking to a 50+ year old.
The 'mature' category (40+yrs) is very popular and gets many many calls.
The only way to make decent money from it is to have 'regular' callers who specifically choose you to ring and ring again, hopefully, these guys will remain on the phone for a long time, since the usual practice is that pay increases the longer he is on the phone.
Sometimes, couples ring the lines too.
The job is sold as an easy job, in the comfort of your own home, the truth is..it is hard work, where some days you have to have the phone glued to your ear for every waking hour to make a reasonable wage, where every caller trots out virtually the same shite, and you have to act like it's the first time you've heard it (when it's the millionth time).
I've heard women say they would find it funny, wouldn't be able to stop laughing...but no matter how good the joke, it isn't funny when you've heard it a hundred times.
It's a very boring way of making very little money, and you rarely leave the house, although you talk to lots of sex starved men.