I remember doing those---I think we called them stabs? Maybe I am remembering those wrong.
I graduated in 2001 and I was doing evenings on the KC rock alternative station and I loved it. I wanted to go into the programming side (I was SM/PD of my college station) and wound up in Vail as a MD at Radio One (my first day on the job was 9/11). It was satellite network and stations would buy our feed and play their advertising (mid markets usually had their own morning drive). We had about 30 markets. The largest was Ft. Lauderdale and the coolest was Maui. We had two regional spots per hour (I quickly burned out) and the stations would send us regional stuff to plug. I still remember one small town in Oklahoma sending us information on a book swap at the local library and I had to somehow talk about that for 25 seconds twice an hour for over a week.
I received demo tapes daily from DJs even when we weren't even hiring. Most were 10x better than me and were willing to work for nothing. When Radio One and moved to Iowa, I decided I needed to find something else. I moved to Florida and found a job teaching--one of the reasons I got this job was they were looking for a TV Production/ Media teacher and the principal liked I had real world experience (the other being if you had a degree in science or math you didn't need teaching experience of ANY kind to teach). I made more as a first year teacher in FL than as a MD of a satellite network. I think if I stuck with it, I would have been a respectable station manager, but not an on-air talent--but at the time, unless you are in a major market, you had to be on-air to be a PD.
I still miss it, but I haven't really listened to any radio stations since 2005--I was an early adopter of Sirius and podcasts.