The manual ("Updated November 18th, 2012") says on page 27:
So which is it?Foraging via the action tab does not deplete Global resources, however there is a 'cool down' on each particular area you must move approximately 5 metres between performing the action.
Foraging skill also affects the quality of any grass you gather using right click on your Resources Panel, but gathering from the same spot 4 times will deplete the resource permanently, the amount of grass resource on a particular spot is global, not personal and does not replenish over time.
Or does it mean that foraging anything but grass does not deplete it, but foraging 4 pieces of grass will ruin the spot for every kind of foraging?
And how do you guys deal with this? Do you print out a map then write down how many times you got grass on each spot? Can you remember where and how many times you gathered grass 1 or 3 years ago?