OBAs prove Software + Services
OBAs are a key manifestation in the enterprise of Microsoft's strategy of Software + Services.
In the past month I've learned of 3 innovative examples that marry social networking services with - the definitive social interface in the enterprise - Outlook.
LinkedIn Outlook Toolbar
http://www.linkedin.com/static?key=outlook_toolbar_download
Xobni Insight
http://www.xobni.com/learnmore
Plaxo Pulse Toolbar for Outlook
http://mashable.com/2007/12/11/plaxo-pulse-outlook-toolbar