Can you do anything useful with it?
At CloudNative, we took that as a challenge. Could we, using AWS Lambda, create a multi-user, dynamic web application without using EC2 or resorting to hacks? I mean no instances, no ELBs, not even a security group. And especially no hard-coded AWS credentials.
We did, and it's called Lambda Chat.
Code on GitHub
Lambda Chat is a simple chat application using AWS Lambda, SNS, DynamoDB and S3.