This is critical. I would love this. But, as the chap above said, using access keys is essental.

I would certanly pay for this as a plugin

I want to clarify - it's important to use "access keys".
Please, avoid support amazon s3 by email access, which gives root access.

Yes would love that

Another vote for Amazon cloud! Thanks for the great file manager...

Would also agree if this is a paid plug-in.