Bad news for Redmond: As Microsoft continues to delay / struggle with attempting to cram the desktop on mobile devices / tablets, etc. end-users are increasingly turning away from their Office-suite and finding alternatives for / to review documents. Aside from not boding well with their bottom-line this also equates to decreasing numbers of consumer being associated (arguably, indoctrinated) with their products! Your move Windows.
(Source) Singapore Today: http://goo.gl/IFzS4N