Ask HN: wishlist app idea

Hey guys, Over the holidays my wife and I have been feeling the need to have a webapp where you could enter all the goodies you'd want for xmas/your birthday/etc from different sources (amazon, ebay, etc) and then send a link to your wish-list to your friends and family, so they could claim the gifts and buy them for you. Ideally you could create several named lists (one for your bday, one for xmas, etc). Seems like it could be a fun little open source side project. What do you guys think?