Olivier over at Headshift has a great post about enterprise adoption of Web 2.0 in which there are many gems including this:
Employees are the one who know which tools are relevant for doing their job more efficiently and we don't have to impose and restrict them (to) a set of tools. By doing so, IT people have created artificial scarcity. This is Malthusianism. They have reinforced the "web as a platform" by facilitating the emergence of web 2.0; simply because people are fed-up being tight in a Flintstone information age. As a result, IT's complaints about Facebook's success and prohibiting it is the cat chasing its own tail. Instead, it might be clever to take advantage of employees who enjoy web 2.0 at home, for years now.