Is it available now? This would be very easy for the users who use a sync software to do incremental backups.

u could use http://gladinet.com/
I'm using it, works fine.

I was searching for a how to and was surprised to find S3 can't be mapped as a network drive, this seems like such a natural step. I agree with the above comment that opening an explorer window and logging in is a suboptimal process.

A Friday tip via @scottisafool, a good friend of mine who knows Live Writer like the back of his hand. You can now use Windows Live SkyDrive as a network location which sits as a drive in your Computer folder. To be honest, the only thing that’s good about SkyDrive is the storage, and for [...]

Amazon S3 (Simple Storage Service) is an online storage web service offered by Amazon Web Services. Amazon S3 provides storage through web services interfaces (REST, SOAP, and BitTorrent).[1] Amazon launched S3, its first publicly-available web service, in the United States in March 2006[2] and in Europe in November 2007.[3]

At its inception, Amazon charged end users US$0.15 per gigabyte-month, with additional charges for bandwidth used in sending and receiving data, and a per-request (get or put) charge.[4] As of November 1, 2008, pricing moved to tiers where end users storing more than 50 terabytes receive discounted pricing.[5] Amazon claims that S3 uses the same scalable storage infrastructure that Amazon.com uses to run its own global e-commerce network