Zankyou.com

We used this site for our honeymoon registry. They have the lowest percentage fee of all the sites that I research (and I researched several). We got our money within 5 days of requesting it. Important note: it takes about 5 days for the money to clear from a person's credit card, a few people contributed money/bought us stuff on our wedding day, so we had to wait about five days after our wedding to request all of the money. (You get one free money request, but additional requests cost $30- that's pretty standard for these types of sites). Many of our guests though it was cool to be able to contribute to our honeymoon (22 days in Europe), and it really helped pay for our trip. I would highly recommend having a honeymoon registry!