How do you feel when you wrote good answer but the OP didn't care/give you a score?

This is common in Yahoo!Answer,when you wrote good answer,lets say,that it’s better than the others or the only one that really 100%ly help the OP but the OP didn’t give score after you help them (especially people who love to add “HELP!/PLEASE COME IN!/5 STARS,else). I mean,days after the question was made the OP still didn’t GA an answer,and most people didn’t vote for answers,some of them even love to thumb-down great answers. Well,that’s me,I will feel disappointed in that repetitious situation,it’s just like taking free flower/gift from orphans but refuse to give some penny in charity box.

Have you ever experienced such situation? How did you feel in such situation?