They link to another tear-down of a fake charger that takes potentially dangerous shortcuts. Also, it generates noise which can interfere with the touch-screen.
http://www.arcfn.com/2012/03/inside-cheap-phone-charger-and-...
http://www.arcfn.com/2012/03/inside-cheap-phone-charger-and-...
I found a possible reason yesterday, it was a duplicate of http://news.ycombinator.com/item?id=3699293
Damn, you are dead since 3 days thanks to this: http://news.ycombinator.com/item?id=4027951 . And you are much more active than I am.