Functional programming and LINQ

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C#

LINQ

At the moment I am reading one of the excellent articles of CodeProject
and I have troubles with code lines like:

string[] names = new string[] {"test1", "test2"};

Predicate<string> longWords = delegate(string word) { return word.Length > 4; };
int numberOfBooksWithLongNames = names.Count(longWords);

Compiler errors CS1928 and CS1503 in the last line.

Is it my stone-age C# compiler (VS2010) or what is going wrong?

Thanks in advance