Like ERP and CRM before, collaboration is the next big space in software. By the numbers: SharePoint is a billion-dollar business. IBM Lotus is a $700 million business. Forrester Research claims Enterprise 2.0 will grow to a $4.6 billion industry by 2013. Collaboration software is evolving to mean much more to its users than it did a few years ago. When it once meant intranet/extranets and content sharing, now it can be described more appropriately as "enterprise collaboration."
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