The pros and cons of switching to Linux from Microsoft

Ad by Microsoft:

1. Microsoft Gives Businesses Lower TCO Versus Hidden Costs of Open Source: Q&A: The prospect of saving 1 million pounds (US$1.48 million) within five years made switching to Microsoft a “no-brainer” at British company Speedy Hire.
   
2. Microsoft: Windows and Linux offer same TCO in emerging markets | All about Microsoft | ZDNet.com
   
3. Microsoft disparages open-source TCO with year-old case study | All about Microsoft | ZDNet.com