Firstly I have to say that this is a great site for promoting the sport, there is no doubt about that. It allows bowlers at all levels to know what's going on and keep everyone in touch. I don't know how much AMF were paying to advertise on this site, but I am guessing that in the grand scheme of things it wasn't much.
HOWEVER.
You have to look at it from AMF's side as well. You're always going to get people on here raving about how AMF should keep promoting tournaments no matter what and all the rest of it - which is great because it shows there is still passion for the sport. But tournaments don't make AMF money and social bowlers (and the vast majority of league bowlers as well) don't visit this site. Why would you keep throwing money into something which isn't viable, especially in today's business environment. "Elite" bowlers represent maybe 1% of the entire bowling population at best and whilever AMF sponsored/run tournaments fail to pull numbers, this sort of thing will be the result.
Bowling is not a charity and you cannot expect the hand outs to continue in tournaments forever. Companies like AMF sponsor events to get something out of it - revenue or exposure. In this environment it is not for goodwill or because the sport is a charity case.
If bowling is going to turn around, the focus needs to change from "what can they do for us", to "what can we bring to the table for them to make tournaments and leagues attractive". If you continue down the old usual path you will get the same old usual results - and they aren't good.