tl;dr? Reddit is helping Carl to rank in google higher. Apparently there is an undeserved rip off report that has been damaging his reputation for a long time.
I've worked with Carl in the past and I can say with confidence that he's one of the smartest people I've had the pleasure to work with.
He's extremely well organized and a quick learner.
Just my 2 cents.
-Nash
No contempt directed at Carl because this sort of thing is exactly what the internet needs more of- but I would like to remind everybody of the excellent opencourseware offered by most major universities.