In your "About Us" page you state that you "colo at a Tier 1 datacenter". What exactly does that mean? Is there any security implimented at the datacenter where you colocate? Does your datacenter comply with any security standards such as SAS70?
Try looking at this kb article for more info on our data center. http://support.Winhost.com/KB/a604/general-information-on-the-Winhost-data-center-facility.aspx
We do not do any transaction processing for our customers, or any processing that has an effect on our customer's financial statements, so I'm not sure an SAS No. 70 is even appropriate in our case, as I understand it.