They're VERY pushy.
I was with them for a few years - they're cheaper than that yellow mob - but I'm not aware that I got a more than one or two enquiries because of them. Most people automatically reach for the bigger, brighter-coloured book.
When I decided to stop because I had enough clients and plenty of personal recommendations, I had the devil of a job getting rid of them. In fact, I still have the (admittedly free) one-line listing because they WILL NOT let me come out of their book.
They seem to think I am obliged to advertise!!!!