Gitter: Publish Mac Sparkle software updates to Amazon S3
github.com
github.com
Eliminate? That assumes you can trust both Amazon and the CAs. For some products (Tor, Bitcoin...), that's insane.
While it might be insane for your requirements, its not for ours and we trust both S3 and the respective certificate authorities for our software distribution. Glitter is very bias towards this to achieve its level of simplicity.