New posts in Backwards Compatibility

How do I convert my Eclipse project to an earlier Java version?

Does reordering public non-virtual methods in a stand-alone class break ABI?

How to warn about class (name) deprecation

Rules for C# class backward compatibility/avoiding breaking changes

Backwards compatibility in .NET with BinaryFormatter

Can I pass an array as arguments to a method with variable arguments in Java?

jQuery Graceful Degradation

How well does jQuery support backward compatibility?