I’m not a MobileMe user but to me this sounds like a great idea:

It certainly suggests though that a community wiki of some sort is in order, some kind of centralized resource that can help us all cope with the very real — and very frustrating — disruptions that, for many of us, are part and parcel of dealing with MobileMe. Of course, the mere existence of such a thing would be a damning indictment of Apple’s efforts with this product, and perhaps it might spur the company to pay some real attention to these problems after all. But I’m less interested in that than I am in a support net for users like myself; like I said, at this point it’s folly to hope for any meaningful help from our friends in Cupertino. With MobileMe, Apple is the absentee landlord, so to speak, and we tenants only have each other.

I do think that it would take some serious guts from Apple to do this, but the existence of such a wiki would make me more inclined to foot the annual bill for the service.