Navigate 1 - Commercial vs. Open Source Virtual Classrooms

When would an open source application take precedence over a commercial product?
For many years Commercial Virtual Classroom software has had an edge over Open Source Classrooms, however things have shifted to more even playing field.  Open Source Virtual Classrooms still has a major ace in the hole, Open Source is free.  If cost is an issue then Open Source Virtual Classrooms are the way to go. 

What are the issues when choosing between Open Source vs. Commercial Software?
There are several issues that should be considered when looking at Open Source and Commercial Software.  The first issue is the cost.  There are limitations with both software types but the Open Source is the most cost efficient.  The second issue is security.  There are many arguments that say open source is more security because the code can be changed to suit the needs of the user, but other arguments say commercial software are more secure because the code is more difficult to penetrate.  When it comes to security it depends on which argument you read.  The third is flexibility and open source is definitely more flexible.  It is clear that there are a variety of issues to address when selecting which type of software to use.  Both softwares have their own pluses and minuses.