productivity software

The Facebook duo is no more. One of Facebook's two cofounders is leaving the popular social-networking site.

Dustin Moskovitz is leaving and forming a new duo by taking engineer Justin Rosenstein with him. Together, the two will launch another company, Rosenstein said on his Facebook page.

Rosenstein, who was recruited from Google by Moskovitz in the early stages of launching the company, said the two have had similar visions on software and what Facebook needs to do to evolve as a company.

Apple is selling more Macintosh computers than ever before -- and that's having unexpected benefits for Microsoft. Sales of Microsoft Office 2008 for Mac are triple the volume for the previous 2004 version of the productivity software and are the highest in the product's history, Microsoft announced Tuesday.