Richard Dennison has posted a great case study about Web 2.0 adoption at BT on his blog called Inside Out. It is great to see such transparency and openness in this case, as often this type of information is considered to be the 'competitive advantage' every organisation craves.
However, in the world of social computing, collaboration and knowledge management - things are different! By sharing the experiences of the successes and failures, practitioners can help develop this emerging domain by quickly learning the best practices, do's and don'ts and the challenges they may face.
More and more we are seeing a culture of sharing and transparency amongst those who realise the benefits of the community-culture that social computing can bring to your organisation. Richard notes the challenges and cultural hurdles which understandably face the 'wiki champions' and the 'internal bloggers' when they present their ideas to the security departments and policy makers.
From my own experience, I think that senior management support at an early stage is critical. This was a key element to the success at BT also, as Richard mentions that it was their CEO who publicly announced his support for a more liberal approach.