Your site is very easy to navigate, and has a very quick loading time. However, it's a little too "simple". This keeps the loading time down, but your site when entering is very uninteresting. Nothing stands out that says "I want these guys as my hosting company". You have pretty good prices, and a nice guarantee, but if you add a little more "stuff" (by stuff I mean a background, graphics of a server, or people) you would probably keep more customers at your site (With little web design involved customers may feel that your "unprofessional" and choose a different company).
Just my 2 cents. Hope it helps a little.