Loading time is a bit slow, the 'check domain availability' form color and the background color is looking very odd. The overall design and layout is good. If possible place the navigation bar below the header.
Nice choice of colours and the layout looks very attractive.
Only thing i would say would be that you need a header to go with the site... As the single default font 'Sandstream Hosting' doesnt look too attractive atm.
Also, maybe experiment with the background blue? Me thinks its not the best choice... but i wouldnt know what is the best choice until i were to play around with it a bit.