My concern is what people will think of Christians. Granted, we've had this happen before. Most notably in 1844 with William Miller, in the 1970's through many popular Christian writers, and again in '94 when Camping's last prediction failed. Funny thing about that - someone who claims to be an oracle of God,
biblically, has to live by some pretty strict standards. For instance, every prophecy HAS to come true, exactly as it was prophecied, or they were immediately dragged out of the city and stoned to death. Why? Because, by proclaiming themselves to be the mouthpiece fo God, they are assigning themselves, and their character, to that of God - literally saying "as I am, so is God". So Camping, having proven himself to be a false prophet, is condemned already and no one should take what he says at face value.
Regardless, my main concern is over the view of the universal Church as a whole. I worry that people will use this false prophet as a brush to paint all "christians" and the overall view toward irrelevancy will get a huge boost.
Not that it's been easy for us lately. Think about it - when was the last time you saw a Christian on television as a strong moral character who was faithful to the end? Christians are often painted as pedophiles, or closet homosexuals, or as being harsh and judgmental of everyone around them while ignoring the obvious (to everyone else) sins in their own lives. Moralism rules the day and the greatest social sin of all is judgment of any kind. Which in itself is funny because those who stand up and point fingers at Christianity as a harsh, judgmental ideology are themselves being intolerant of and abrasive toward, Christians.