My only concern is really that in the short/medium term, this could lead to a large influx of freeloaders from other communities, who may have no interest in "p

My only concern is really that in the short/medium term, this could lead to a large influx of freeloaders from other communities, who may have no interest in "paying it forward", but mostly in dropping by for a quick freebie, while not contributing anything. It would be pretty awesome if I was wrong though, and that a new spirit of collaboration across multiple communities was the end-result, but I remain skeptical.