It used to cost US$99 as part of mobileme subscriptsion. Its idea is to use other iPhones/iPads/iPodTouches to find your lost or stolen iPhone. It can also remotely lock iPhone, or even delete all data.
Who says you can’t edit Microsoft® word and excel files on you iPhone?
Well, you can do it now with extra bucks from your pocket 😉 US$20? What do you think?
Quick office has its version for iPhone starting April 2009, and it also views iWorks documents and PDF.