Clearly there are two things going on here that you seem to object to: 1) People actually find this link useful. 2) People don't want you to be the judge of w

Clearly there are two things going on here that you seem to object to: 1) People actually find this link useful. 2) People don't want you to be the judge of what is appropriate on hacker news. Look there are always going to be links like this because people here like them. Whether it's book coupons or links to getting a free Chrome book from Google or free phones from Microsoft or Blackberry for developing apps, these links people find valuable. If it bothers you, then just skip it and move on.