About S3 Touch
S3 Touch allows you to upload photos from your iPhone or iPod Touch to your Amazon's Simple Storage Service (Amazon S3) account. Select a bucket, select the photo, and it is uploaded quickly and easily to S3.
Requires a free Amazon AWS account with S3 enabled. Sign up here: http://aws.amazon.com/
Don't forget to put your Access Key and your Secret Key into the S3 Touch section in the Settings app. You can find your AWS key information here: http://tinyurl.com/AWSKeys