CIO magazine has a great article debunking many myths about open source. The article debunks several myths including:

• MYTH 1 - THE ATTRACTION IS THE PRICE TAG
• MYTH 2 - THE SAVINGS AREN'T REAL
• MYTH 3 - THERE'S NO SUPPORT
• MYTH 4 - IT'S A LEGAL MINEFIELD
• MYTH 5 - OPEN SOURCE ISN'T FOR MISSION-CRITICAL APPLICATIONS
• MYTH 6 - OPEN SOURCE ISN'T READY FOR THE DESKTOP

There are many great examples of how open source is working for companies of all sizes.