Queen is making a big splash on BIllboard's Social 50 chart. The group is debuting on the list at number 15, courtesy of the publicity surrounding late frontman Freddie Mercury's birth anniversary.  The rocker would have turned 65 on September 5th.  Billboard.com says Queen had 17 videos posted on their YouTube channel with testimonials from different artists sharing how they admired and were influenced by the singer, while Google honored Mercury with a special doodle on the site's homepage on September 6th.  As a result, Queen's YouTube videos went from 32-thousand views to 324-thousand in a week.  The official Freddie Mercury birthday video has been seen 612-thousand times, and generated 25-hundred comments along with ten-thousand likes.  In addition, Queen earned 96-thousand new fans on their monitored social network outlets.