Comparisons and advocacy

The really pernicious aspect of these kinds of questions, which most people would classify as FUD (http://en.wikipedia.org/wiki/Fear,_uncertainty_and_doubt), is how they keep organizations from seriously considering using tools like Moodle.  An otherwise smart and informed colleague told me that her corporation's legal department took the position that every line of code in an open-source application would need to be checked to make sure it didn't belong to someone else; otherwise the corporation could be liable for copyright infringement.  That's where your corporate CMS comes in:  "We'll made sure you never see the code, so you'll have no idea where it comes from, plus we'll stand behind it and we have our own legal dep't."  Then the corporate CMS seems like the safer option - a loss for the open-source community.