Perhaps a little common sense is in order. When I wrap the cable around the winder for my wife's MacBook, I allow the cord to come straight out of the power box, then create a very loose "loop" which puts absolutely no strain on the wire or connection, then I very carefully wrap the wire around the convenient fold-out brackets built into the box. If people will learn to treat things "as if" they are very fragile, they will last much much longer.
Yeah, I've been doing that on my MB/MBA/MBP power brucks since the original PowerBook bricks, when my second replacement started doing the same thing.
The following isn't directed at you, but at some of the Apple defenders on this thread. Apple has admitted to a design flaw and are claiming ownership of the problem. Go look at the Apple Store reviews. Or the Amazon reviews for that matter. It's among the worst reviewed products made by any major CE manufacturer.
Yet, when people say they've gone through a great number of these flawed power adaptors, adaptors so flawed that Apple will retroactively pay you, you have the gall blame the user.
Apple really has become a religion for some of you people.