It would be interesting if you had a conversation with a friend and before you started talking you saw either a check mark or an X on their shirt. What am I talking about?  take a look at this discussion about a godaddy coupon where they’re talking about a coupon for registrar. What is interesting is that as you scroll down the page you will quickly see that people have put either a checkmark or in tax and voted on each of these items. So in other words before you even look at the page which is equivalent those having a conversation with someone, you are able to quickly see which of these are useful are not useful.