After writing a post about how much value the Hacker News Google+ Circle added to my search results for technical queries when google turned on social results (
http://thesash.me/how-google-got-its-groove-back), I got to thinking about how that could be applied to other interests, and then came across this. It seems to me that despite all of the hand-wringing surrounding the launch of social results and the implications for SEO, following experts in a variety of areas adds a pretty impressive layer of value to search.