Office 2013's strong social networking component appears to be targeted mostly at Microsoft's huge installed base of enterprise users. In addition to Skype, Office now includes Yammer, a secure and private social network for businesses that Microsoft tentatively acquired just last month. Yammer integrates with SharePoint, Redmond's Web application platform, and Microsoft Dynamics, the company's line of CRM and enterprise resource planning apps.
Office 2013's People Card tool provides detailed information about your contacts, including their status updates from Facebook and LinkedIn. Now you'll know what your clients had for lunch--and perhaps whether they had lunch with your competitors.
(Image credit: Yammer.com)