Shatner - 10:41 pm on Mar 1, 2012 (gmt 0)
Google DFP is now doing this and I've heard some really wild rumors that whether or not your ads are loaded async will now be a ranking factor.
I've heard from webmaster friends who have acted accordingly and begun using Google DFP to serve their ads async and they report an immediate jump in Google Search traffic. Some have even suggested they were being penalized for not doing it previously.
Any truth to this? What have you heard?