Tumblr is an amazing platform for ethnography, and here's why...
I chose Tumblr as my medium for brand building for a variety of reasons, one of the most important being that there is a pre-established fitness community within tumblr that hosts several subsets of the tactile world of fitness. I did not even realize that there are build-in features that make the site extremely conducive to research, especially research on the development of a personal brand.
Tumblr tracks user activity, from most liked posts to days with biggest follower traffic. This specific tracking makes locating areas of progress (as well as timing of progress) extremely simple. I know who likes my content, when they like it, and I can even infer how a certain level of traffic solicits more attention.
Bottom line: tumblr is more than what it seems. The research potential is vast.