No, they're not. I see exactly the opposite of what Wikipedia calls social media marketing.
Not companies earning traffic to their websites because they do interesting things that eventually get shared on social media, but rather companies that send their customers away from their websites and over to Facebook and Twitter and Instagram and Pinterest and Vimeo and Vine etc.
But obsessively telling people who are visiting your website “We’re on Facebook” or “Follow us on Twitter” must be the dumbest thing of the decade.
They’re already on your website. Why send them away? Does anyone in marketing really think that their big and boring companies will magically look cool and hip on social media?