Should I go through and mark " best answer" on my old post?

Hi Slstewart I am not sure If marking a best answer will help you earn more. But then when you do the it is sort of an incentive for the others to take part more in your discussions cos everyone wants to get awarded that. So if people see you awarding a best response for a discussion participation in your future discussion might increase and vice versa. Plus you also make one person happy by marking his/ her response the best. So I think it is good enough reason to award the best response :) Cheers :)