[nmrm]

Ah, I misinterpreted your comment. Sorry.

> It's relevant to working for a private, for-profit business in the sense that the alternative is often doing an internship for a private company.

I still think there's a pretty significant ethical difference between not-for-profit research and a for-profit business. Even without the student-teacher relationship, unpaid internships in CS are pretty ethically dubious and uncommon.