Ideone is a free online IDE and debugging tool which enables users to share and run code online with own input data and it's designed specifically for programmers and developers.
Dead easy/fast place to quickly check some code.Cons:
None I've found.
For a quick, I wonder if this can work, I really love this. Just easy to fire up, check it, and off you go. Really well done.Rick Segal has used this product for one day.