I think it's a smart move. I doubt this will directly be a major revenue stream. But there's more at play here. FB has been trying to figure out ways to track a

I think it's a smart move. I doubt this will directly be a major revenue stream. But there's more at play here. FB has been trying to figure out ways to track and collect retail data for a while. Remember beacon? This seems like an interesting way to start understanding what you buy and where. Thus making advertising even more efficient.