After thinking about how Instagram limits their feature base, it made me start thinking about how other sites do the same thing. Tumblr’s main sharing feature is simply to reblog. And tons of people do it. In fact last year I did some research to see which add-on sharing services work best with tumblr and I found that people rarely, if ever, click on a “like” button tumblr. Or digg or retweet. One of these days I’ll dig out those stats and share them.
The people on tumblr simply just reblog. And it works.