engine - 4:13 pm on Oct 10, 2012 (gmt 0)
The idea of a 'want' is not the best of terms, but I guess use of a 'wish list' is already well covered.
The idea is a fantastic one, from FB point of view, and I can imagine merchants clamouring for the data and a selling opportunity.
The quick and easy route would be to integrate a local sales feed from merchants. I'd hate to suggest selecting amazon. If your ecommerce site could feed the relevant products and services, and your 'friends' could just hit the buy button, how good could that be, especially around birthdays. Making it easy to buy is the answer.