Not quite sure what they're suggesting. A wishlist system, whereby I have a bunch of products in which I've expressed an interest? Some kind of digital gifting

Not quite sure what they're suggesting. A wishlist system, whereby I have a bunch of products in which I've expressed an interest? Some kind of digital gifting system where people pay money to buy virtual "presents"? In the case of the former, we already have Amazon wishlists, or I suppose someone could go through my Pinterest and see what I like. In the case of the latter, if anyone actually bought me a digital gift then they'd probably get unfriended. If Facebook can come up with a wishlist system to rival Amazon's then people will absolutely flock to it.