In a post on the their blog, Buffer author Kevan Lee plainly states, We as a Buffer marketing team—working on a product that helps people succeed on social media—have yet to figure out how to get things working on Facebook (especially), Twitter, Pinterest, and more.
Somehow, some way, Buffer has lost nearly half its social referral traffic over the last year.
The bottom seems to be falling out across Facebook, Twitter, LinkedIn and Google+:
Check out the full post here.