With the increasing demand of problems solutions are not posted to that great extent . If the number of up votes to a solution would be some function of rating people would compete to give their solution . I feel that posting a solution is a very important part of brilliant. If you like my suggesion then please reshare it . Do take part in this discussion and express your views as a comment. Another good idea is to have bonus for giving solutions. Timing is a very crucial part required for Olympiads and entrance exams throughout the world . Problems once seen should be timed until a person solves it . In this way students can practice doing questions with a pressure of amount of time. The time should also should be related to the rating of a person . It would be very gratefull of the brilliant staff if they could comment on this note .