What is a “Predicate delegate” – bytes

Thinking in terms of Delegates was always a bit of a challenge to me. So when I hit the Predicate parameter when trying to using a List<X>.FindAll(XType y).

The example given in discussion on this article went a long way to clearing this up. If I get more answers like this from Bytes I might start using this as my secondary source of programming answers after StackOverflow.