In before deadl- oh wait..
I don't know if you guys have seen this already, but i don't think it's been posted yet.
It's a video by an anthro professor on YouTube that was presented at the Library of Congress. http://www.youtube.com/watch?v=TPAO-lZ4_hU
The video is about new forms of expression and identity, and how media isn't just content or tools, but a way to 'mediate human relationships.' But he talks about a lot of the things we've looked at such as text, history, user generated stuff, mediums of communication, etc.
Anyway, it's an hour long, but it's pretty interesting- talks about a lot of popular stuff too- and whoever uploaded it (i think the guy himself) made an outline of it in the description, so you can jump to parts that sound of interest. I saw it a while ago, but after talking about some of these things in class i'm watching it again with a new perspective on some things or at least like, 'oh snap' moments (it's pretty trippy when they talk about who you're talking to when you do a vlog, 'collapse of context').
Participant observation ftw.