Should IT Shops Let Users Manage Their Own PCs?

An anonymous reader writes "Is letting users manage their own PCs an IT time-saver or time bomb waiting to happen? 'In this Web 2.0 self-service approach, IT knights employees with the responsibility for their own PC's life cycle. That's right: Workers select, configure, manage, and ultimately support their own systems, choosing the hardware and software they need to best perform their jobs.'" Do any of you do something similar to this in your workplace? Anyone think this is a spectacularly bad idea?