Well, given that the people here seem to have extreme hatred for Quora, they should not be visiting the site or do it on the terms set by Quora. I find it extremely hypocritical that they would want to read extremely interesting content which is often available there. Given that the original link was there in Quora, I don't see any reason why it should be changed - if people find it bad, they should not click the link or flag it so that it disappears.
