07/03/2013: Fortunately, I've used the free version for one month. What I would have been annoyed if I'd get paid money for this junk. What happened? After downloading Word and Excel were not running. The program "functioned not"! It has been given a search for a solution in view. This so-called solution of course brought no result. But that's when Microsoft not uncommon for troubleshooting are none. Well, then uninstall everything and installed with the same result again. On PC's is not (Quad Core i5 Intel graphics 2GB, 8GB RAM, 1TB hard drive). My PC is one week old and running with Windows 8 and stable. Opinion OpenOffice. Is not as fancy, does not cloud, but runs. Fair Microsoft that you can test their stuff free.
Update 08.03.2013: I have identified the problem with Office: If you have installed ABBY Transformer (often in eg Epson printer in the software here), then docked at the on Word and Excel, PDF files from scanning there for editing to open. And that is precisely the problem that brings Word and Excel to crash. Would be nice if there's time would be a fix.
Therefore, correction of 1 star to 4 stars. The 5's if Microsoft has cured the problem by update.