I surprised there was no mention in the blog post or the comments so far about the homework factor. It isn't just personal side projects that people are working on over the weekend. I am betting the relative percentage of CS students on the site is also much higher on the weekend. Tags like assembly, pointers, algorithm, recursion, class, and math are all rather vague. Those topics are all discussed at length in CS classes, but if you are working on a real world project in those fields, odds are you will tag it with a more specific technology you are using rather than the abstract theory behind it.
EDIT: On second look, Python, C, and C++ are also the go to languages for CS classes (along with Java but that is also a big enterprise language unlike the other three.) Almost this whole list seems to be schoolwork related.
EDIT: On second look, Python, C, and C++ are also the go to languages for CS classes (along with Java but that is also a big enterprise language unlike the other three.) Almost this whole list seems to be schoolwork related.