They used to be the primary source of information for anyone trying to get into the airlines. They were (are?) run by a couple of guys that were unemployed themseves, and decided to share what they learned with others via an excellent newsletter. They were the first to organise presentations by the major airlines that were relevent to wannbes and could be attended by anybody for a sensible price.
Over the years these guys became employed and the fire probably died a bit. They've certainly been shaded by the Flyer and Balpa employment symposia, and by Pprune itself. I wasn't actually aware that they still existed; I'd be interested to learn what they offer now.
Scroggs