I have developed
www.clubface-golf.com which is a vertical social media site just for golfers (we are rolling out other verticals in the near future), what are your thoughts on social media for specific interest groups? Our research showed that many people (users) found generic social media to be complicated and full of content they did not want to see or irrelevant.
Within the golf market there are thousands of Facebook groups for golf, and finding the right one(s) for you is a real chore.
I would be delighted to hear your thoughts, and if you want to check us out, please feel free. It is free of course.