Not only do you not support 1024 wide, you do it with backgrounds on your "how it works" page, so I can't even scroll sideways if I want to. Note: I'm a design/product guy currently on a netbook (i.e. I'm your target market).
RescueTime, the company I just stepped down from, has about 8% of its users visiting with 1024 screens. This percentage WAS trending down but has flattened (Netbooks? iPads?).