Actually, this website is one of the good areas to discuss math problems from almost every branch. while looking for something, I can encounter many interesting things.
The thing which is weird for me is that while there are many beautiful question ranked at most 4 and 5, there are some useless questions ranked in the 50s. Of course this is my opinion; what do you think about that? What is a really good question? When a question cannot be solved, does it really mean that it is a good question? For example, it is known that when the degree of a polynomial is bigger than 5 then it has no general solution so, if I ask roots of a polynomial degree 6 with appropriate coefficients, probably nobody can solve this. Does that make this question good? I guess some people think so. As a result what should be criterion for evaluating the questions?