"Social media only sells social media"? Really?

There's been a great deal of talk on t'interweb about the articles by Ewan Morrison, such as this recent one, on various aspects of modern writing and publishing. (I'll be meeting Ewan soon, as we are two of the 50 international authors picked to take part in the Edinburgh World Writers' Conference from Friday to Tuesday, as part of #edbookfest. I'm sure we'll be talking about ebooks and