The circus, I think, is regrettable. I can understand why some Christians wanted to join in the general fun and jollity, poking fun at this nonsense. I did too, but in the end there was just too much web-based Christian mickey-taking for anyone to enjoy. And those who were claiming some kind of noble motive for it need to pipe down. It's like having an embarrassing little brother who you join in with bullying, because you think that will make it less embarrassing. It doesn't. He's still your brother, and everyone knows it. If we really wanted to discredit this prediction, the best thing we could have done was to ignore it, rather than join in the abuse heaped on it by people who think that all Christians are just as wacky as Harold Camping.
And I'm equally grumpy with Harold and his mates too. Why is it so hard for people who spend so much time with their bibles to understand some first principles? One: understand genre - the bible is rich in metaphor, look it up if you don't know what it means. Two: the words of Jesus have primacy - "no-one knows the day or the hour", anyone? Three: the bible belongs to the whole people of God. If everyone else is telling you you're barking up the wrong tree, you really ought to listen to them.
At least the rapture failed to happen on a Saturday. We can get up tomorrow and celebrate the resurrection, and the dawn of a new day to live with Christ here on earth.