Do you use Sugar Sync to back up your mobile devices content?

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I might have my smart phone store some photos that might seem important, or Ipad downloaded some important documents etc.... With all these mobile devices, we would like to back up whatever were there in case of that mobile devices is no longer working, or it is lost. Some people recommend me about this web service called sugar sync, have you heard of it. It specifically designed to back up your important content in those mobile devices. Have you ever tried it? And what is your experience with sugar sync?