YouTube - John Piper - Why Rick Warren @ the Desiring God 2010 National Conference?

http://www.youtube.com/watch?v=RlxRKLXk1WE This is sad. He only is explaining and justifying himself not to the world but to Christians. That is a red flag. John Piper has endorsed Rick and that will lead people astray. John says Rick claims true solid doctrine, but what fruit is Rick baring? If you have to justify this before it takes place something is wrong!