Evil use of Maybe monad and extension methods in C#?

Question

edit 2015 This question and its answers are no longer relevant. It was asked before the advent of C# 6, which has the null propagating opertor (?.)

Answer 1

In case you're dealing with C# 6.0/VS 2015 and above, they now have a built-in solution for null propagation:

string ans = nullableString?.Length.ToString(); // null if nullableString == null, otherwise the number of characters as a string.