He was upset in reading my answers and described as "moron answers". He said I copied my answers from somebody else and I'm only after of gaining points. Its okay, maybe that is what he actually did and wanted. Anyway, I usually choose a question that could be briefly answered in practical manner. I never thought that all my answers are right. Its my own opinion and suggestion only, Its up to the asker to accept it or not. For your info, i find Yahoo!ANSWERS a good learning experience and a nice passtime during breaktime since I joined on 9/3/07.