A simple pool service
Once you've added a product into your list, you will have the possibility to choose the "contribution option". With it, your friends will be able to make a donation for your gift. You will see a gradient bar showing percentage of contributions achieved before reaching your products price. After each friend's transaction you will receive an email, describing who donated in addition, with the short message he left you.
We've chosen the solution from Paypal, as it is the most secure option for internet payments. All donations will immediately appear into your Paypal account as soon as one of your friends makes one. You will then be able to purchase a gift with it or to require a transfer to your bank account.