SandHill.com and McKinsey released an industry report in pdf.
"Technology Discontinuity: Web 2.0 for the Enterprise. As in previous innovation cycles, whenever multiple point capabilities converge – such as wireless, pervasive broadband, and online collaboration – many new
applications become possible. In these cases, consumers tend to adopt the new services and products before the enterprise, but in the end the enterprise market is usually far larger and more proÃ¯Â¬Âtable. We believe that much of the hype around “Web 2.0” for consumers – with its rapid innovation in content (e.g., blogs, wikis, user editing and tagging), [social software] tools like search, and services like content hosting – heralds a much larger opportunity to put these innovations to work in the enterprise."
More insights here and on the right side under related tags and similar entries.