[JustHiThere]

I think we're all correct in some sense. The thing is @paulcole is taking "social media" in the strict definition of the term, when most of the people here are talking specifically about a bunch of social media.

Which makes sense to me. Because ask someone on the street to provide the names of 3 social media platforms, they'll in 99% of the cases mention Facebook, Instagram etc ... And none of them knows that a blog post is social media ...