The Rundown:The microblogging site tumblr allows you to post text, photo, quote, link, chat, audio, and video.Tumblr was founded back in 2007 in New York City by David Karp. I’ve been ontumblr for about a year now. At first I mainly lurked and didn’t post much. When I joined talklaunch I started posting my weekly column as a mirror. I slowly started to post more content and now I’ve totally hooked on tumblr. I joined tumblr because I read an article onMashable able how great the content was and they were right. tumblr is my laugh factory each day and night. My daily dashboard view is absolutely hilarious because there are some very talented people on tumblr with animated gifs.Click HERE to read more.