engine - 10:05 am on Aug 1, 2013 (gmt 0)
Most are probably button pushers. Their objective is assessing the content. How they get to the content, past pressing a button, is of little interest.
Since the Internet became part of our lives (for me, it was in 1994/5) I have always thought that the system is insecure. Each of these announcements only continues to prove I was correct.