Traditional blog platforms are chiefly designed to do one thing—write a blog post, give it a title, add photos, multimedia, tags, etc., and then publish - and while they do it very well, it often means there’s a big barrier between thought and publication. The original idea behind Tumblr is drastically reduce that friction — you can just post a photo, if that’s all you want, or a video, or a snippet of text, etc.
Mark Coatney, Director/Media Evangelist, Tumblr.
Laura Hlebasko, Benzinga, Whither Journalism? The Present and Future State of the News.
FJP: Case in point.