lol isnt the whole point of sarcasm to say a sentence, but with a tone that underlines your not serious about the statement you just made? this is why i dont like discussing important topics via text/email, but rather over the phone, so i can hear emotions, which, imo, is really how sarcasm is portrayed, along with facial and body expressions. i wouldnt put much hope in a product that checks for caps and exclamation points over raw emotions.