The advantages of appengine compared to an EC2 micro instance are that there is every little that can break over time. Develop once, deploy, forget about. Also:

The advantages of appengine compared to an EC2 micro instance are that there is every little that can break over time. Develop once, deploy, forget about. Also: It's only free the first year, you still have to pay for bandwidth, it will cost more effort to scale and you can just have 1 free micro instance, but 10 free apps.