Hidden costs of oursourcing

When you investigate whether or not to use an IT vendor to support your organization, one question will inevitably weigh on your mind: ?Will outsourcing save me money?? This white paper

http://itpapers.techrepublic.com/abstract.aspx?cid=67&docid=82416

describes five hidden costs that you should consider when evaluating the financial implications of outsourcing versus using internal resources. What do you think of this paper?