Is Open Source Important?

http://twitter.com/chrispirillo - http://facebook.com/chrispirillo - http://chris.pirillo.com - Justin called from southern California recently to talk about open source projects. He's doing some research into this for school, and had a few questions. Justin asked my opinion as to the pros and cons of both open source and closed source applications, along with positives and negatives of each. What are YOUR thoughts? http://live.pirillo.com - http://www.lockergnome.com - http://geeks.pirillo.com