Dynamic Broadcasting Microblogging ??? Tumblr ??? Tumblr is a microblogging platform and social networking website. ??? It is owned and operated by Tumblr, Inc. ??? It allows users to post multimedia and other content to a short-form blog, named a tumblelog. ??? Users can follow other users blogs, as well as make their blogs private.www.sti-innsbruck.at 31 32.