I have:
1) signed up for an aws account
2) set up buckets for domain.com and www.domain.com
3) enabled website settings in properties for each domain
3)
I used the approach described in http://thechrisoshow.com/2011/06/05/how-to-host-a-static-website-on-s3/ (also with godaddy).
It boils down to deleting the A host entry, creating a CNAME entry and using godaddy's forwarding functionality.
For me it is a partial solution. It works if I type jaumebarcelo.info in the url bar.
But it does not work if I click on a link pointing to jaumebarcelo.info
or if I type wget jaumebarcelo.info from the command line.