Network World, is apparently concerned that iPhone users aren't aware that their iPhones are prone to cracked or broken screens due to third party iPhone cases:
http://www.networkworld.com/cgi-bin/mailto...;site=printpageQUOTE
Evidence that something might be up surfaced when Apple watchers took notice that the company had suddenly begun offering only its own iPhone cases on its website, not many of the third-party cases that Apple steered users toward in the wake of what became known as “Antennagate.”