I don't know anything about marketing or the internet/social media or even much about what people like to read. But it seems to me that Golf Digest is a "brand" and a still (potentially) valuable one, and that if it were to remake itself as an on-line, by subscription only source, it would (still today) have a built in audience and some good will and a name that would/could give it a leg up on everyone else and set it apart to be whatever it wanted to be. So, my two cents, counter-intuitive though they may be: go high-brow, Golf Digest, go smart, go with top writers from other disciplines or with the Tom Doaks or Ben Crenshaws of the world -- have Ben write 3000 words about his library of golf books, where he got them, what they mean to him; have Tom pen 5000 words on the meaning of golf course architecture, personal and collective; have that Blink guy write his head off about golf.
Peter