A pedantic interviewer won't tell you if mix your terminology incorrectly. The more experience you have, the more pedantic you tend to get because computers are pedantic. They do exactly what you tell them to, not what you meant it to do. ;)
I'm actually really against comments, which is ironic, given what I'm doing right now. Most comments either reaffirm the reader's view or make the reader a tiny bit angry. I don't think they're that effective at actually causing people to think.
Think about how many great discussions there are here, or in the best threads on Slashdot, Reddit, and plenty of other places. So it seems to me there are plenty of great comments that help people think, learn, grow, etc. True, there are plenty of comments that aren't so great ... so one way to look at "reinventing comments" is to how to magnify what's good and minimize the "get you angry" factor and other downsides.
This is probably a good thing for Puppet. If the want to drive adoption of their software in the enterprise, it's better to switch to a more permissive license than the somewhat Idealistic GPL. It will make corporate legal departments more comfortable with the idea of using Puppet.
See kids...