RAIS1 inside Cloud Computing?

All of my mails are on Yahoo and Google over last 6-7 years. Blogger holds my blog and Flickr stores my pics.

As far as I am aware, nothing I can do if any of these guys decide to shut down, or they just zap my account. Should that be a concern while opting for these services???

or should there be another app that will use two diff providers and mirror my data in the backend like a RAID 1 controller does... :)

What it would be called? Redundant Array of Inexpensive Services ??

:)