More from Mashable – Flickr changes sharing options. One of the most significant features is the addition of Tumblr to the roster of social sharing destinations.
http://mashable.com/2011/03/30/flickr-tumblr-sharing/?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+Mashable+%28Mashable%29&utm_content=Yahoo!+Mail