It's Open-Source

• The source code must always be available

• If you modify the source code, you must make your changes available

• Just because you develop on Linux does not mean you have to make your programs free

• Plenty of commercial applications are available (StarOffice, WordPerfect, Informix, Oracle, etc.)

• You can (and many many do) run your business on Linux

• Check out http://www.opensource.org/ for details