You may well have already seen this, but i have only just managed to get around to it, after clearing out my inbox. What a therapeutic exercise that was.
McKinsey say the following:
To help companies navigate the Web 2.0 landscape, we have identified six critical factors that determine the outcome of efforts to implement these technologies.
The 6 are available in there post here Six ways to make Web 2.0 work – The McKinsey Quarterly – Six ways Web 2.0 work – Business Technology – Application Management.