I started using the site when I had my second because it seemed cheaper for the number of diapers I had to buy. And if you are ordering a lot it is a little cheaper. You only get free shipping if you spend over $50, which is easy if you are buying for two.That being said I have just recently had a terrible time with them and my last order. Their e-mail communications leave a lot to be desired- part of my order was backordered but they never told me that I just got several your order has shipped notices. Customer service, when they respond was helpful and they corrected the problems with my order. However never when I called did anyone actually answer the phone and their e-mail took a long time to be answered. Until this recent experience I was pretty happy with them and they claim they are updating and changing things now.
You should know that its not exactly convenient, most orders take at least a week to arrive, so you need to plan ahead in your ordering. I have also compared prices, and at least for the regular Huggies, Babies R Us has the same prices. I haven't ordered anything but diapers and wipes, but I have been surprised at the prices on bottles/nipples etc, they seem really good.
Even with all that has happened I will try them at least one more time to see if they improved, its nice to have them just show up ad to have the UPS man carry them up all my stairs! If you want to try it, here is my code: MEHA1144 it will get you $2 off your first order.