Startup Idea : Share wishlists with Facebook friends

I'd like a website where you can make a wishlist and share it with your facebook friends. The recipients can book or discuss a wish with all recipients but the creator cannot see any bookings or comments. The main problem that this site would solve is that the recipients doesn´t need to know each other, but can still collaborate about what to buy to for example a wedding couple. Additional features: - Maybe the same list could have several admins (the wedding example again). - Maybe a recipient could partially book a wish (I would like to by this item, but I can only chip in a certin amount and need more recipients to help) - Maybe we could add the posibility to be a recipient just through email if someone doesn´t have an facebook account