There was a formally bad, newbie-looking question (formatting, question part in comment, stuff like that) by a 2K+ user. I commented wondering about this, and it came up that the question was in fact asked by a friend.
I did the usual "bad question" things, and in comment suggested he should educate this friend on how to ask questions at SO in future, and pointed out that creating an account is free and you can ask a question even without an account, and suggested he should edit the question to meet SO standards.
My understanding is, that account sharing isn't necessarily a problem at SO, so should I do something more, such as flag the question for moderator attention?
In addition to should I flag or not, I'd like clarification about different aspects of the whole thing: account sharing in general (seems to be mostly OK?), and account sharing of high-rep accounts (and what is "high-rep" for this purpose), and a shared high-rep account producing low-quality posts.