you may have missed the point that sarcasm is difficult to convey in text
particularly in modern forums where peanuts are a dime a dozen and when found out to have posted something particularly stupid - then, use 'you don't understand sarcasm' as their defence
communication is a two way deal - you have a responsibility to your audience to get your message across so they can understand what your concept is
you failed ---- if I've got time from researching and observing my belly button fluff - I'll reread your post in the next few months to clear the matter up