Honestly, one of the most disappointing things about research papers is that, unless they're in Communication or Anthropology, you aren't really allowed to use even the most insightful blog posts, and even then, it's hard to portray the collaborative nature of blogging in that setting. You can cite a video or an unrecorded lecture or a Powerpoint slide outside the context of a presentation, but it's bad form to cite a blog post.
I think one of the responsibilities of the new generation of scholars is to legitimize social media as a form of communication. It should be worth something to say, "this post about x got hundreds of thousands of notes and sparked a lot of discussions and that is significant" or "this is in tag format, but it still has value as a concept." I could write a paper about Actual Cannibal Shia LeBeouf and the performing arts histories that converged to make it possible, but I can't incorporate someone's tags about depression being caused by sustained mental injury into my paper about how parental violence and social devaluation contribute to the frequent use of themes of trauma and mental illness in black women's literature, and that's a shame.