[alach11]

>In practice, my stance is becoming increasingly moot, as more of my official solutions get uploaded to places like CourseHero and Koofers and their many foreign-language equivalents.

I've found that whether or not a professor releases solutions to assignments (or even tests), some segment of the student population will have access to the solutions. Releasing them publicly ensures the access is universal, instead of limited to those with the right connections/access.

[nerpderp82]

I found out my last year of uni that frat and sororities had a huge, well run archive of homework, tests and solutions for every class ever taken by members. This was the first time that I had been so close to structural class benefits. This is absolutely how these kids skated through, many of which should not have graduated.