I too have noticed the decline of posting traffic. I try to contribute as often as I can. However, the lively and free posting that occurs in other threads does not seem to be the norm here. Additionally, I haven't seen as much PM's being used in other threads as it occurs here. I don't know why that is.
As to the cost of eating, I have tried to point out "everyday" places that offer great value and "local" experiences.
Let's hope the posting momentum will increase.