I have just published a small project on CodePlex called CDN Sync.
The primary goal of this project is to provide a set of tools to synchronize local files and folders with Cloud Storage Providers during the Build and Deployment process.
Using a CDN (Content Delivery Network) for all your static website files should be the default these days if you’re concerned providing the optimal client experience, however deploying these files to your CDN Provider can be a manual process and prone to versioning issues.
Version 1.0 includes an MSBuild task and support for synchronizing with Amazon S3.
Pre-Requisites:
Visual Studio 2010
Amazon Web Services Account
You can download the Release from here and read the documentation
Future features:
Support for Cloud Files
Support for Windows Azure
Command Line Interface
Any questions or issues then please post them to the CodePlex project or comment here.