[thrashr888]

I created something similar once S3 started allowing browser-based uploads. It's hosted in S3 and uses S3's rules to expire the files. The code's on Github so you can easily host your own copy.

http://s3upper.s3-website-us-east-1.amazonaws.com/

[alfg]

I've also made something similar, a demo of CORS uploading directly to S3 in node/express.

http://dropdot.alfg.co/

https://github.com/alfg/dropdot