Take a look here - http://jsfiddle.net/9wFJS/2/embedded/result/
Which of the three is good? This is inspired by a conversation here...
I like the second one, but two users disliked it. One saying that it doesn't look sexy on click and would be better if the placeholder is removed on click. The other said he personally dislikes centered input boxes.
I would like to know, is there any general problem with centered input boxes? And finally, which among the three from the demo is best?