I use jungledisk for backing up my photos ... it uses S3 for the backend. SE is cheap (about $1/month for the amount I've uploaded so far) and reliable.
Are you thinking of using a third party application for backups or rolling your own? S3 seems to have a pretty well developed API. I thought about writing my own application for the hell of it, but the amount of time needed to produce something reliable put me off that idea quickly)
I use jungledisk for backing up my photos ... it uses S3 for the backend. SE is cheap (about $1/month for the amount I've uploaded so far) and reliable.
Are you thinking of using a third party application for backups or rolling your own? S3 seems to have a pretty well developed API. I thought about writing my own application for the hell of it, but the amount of time needed to produce something reliable put me off that idea quickly)
I've used S3 on a few projects, it worked really well as a cheaper method of serving up images. For backup purposes, it might not be ideal, as anything you upload is going to publicly visible.
If you're in search of a secure backup solution, why not just get a Time Capsule or Drobo?