Following in the footsteps of Facebook, Twitter, Digg and Google Buuz, blogging platform Tumblr has released "Share On Tumblr" button, which allows publishers to add a button on their site encouraging users to share their content on Tumblr.
The Tumblr button give you complete control over how your content appears when shared on Tumblr. Not only does this mean specifying an excerpt or summary, but also deciding whether it appears as a Link, Quote, Photo, or Video Embed.
The button is fully customizable and is versatile enough to appear anywhere on a site, whether at the footer of articles or while hovering over paragraphs. You can also choose whether the content will appear as an excerpt or summary when reposted on Tumblr.
The appearance of the button is also completely customizable.
"Tumblr is responsible for 26 million visitors per month globally, according to comScore. Currently there are over 5 billion posts on Tumblr, 18 million total Tumblr blogs and there have been already 30 million Tumblr posts just today."
Just add the following code to your web site /blog (s) for the button like above:
<a href="http://www.tumblr.com/share" title="Share on Tumblr" style="display:inline-block; text-indent:-9999px; overflow:hidden; width:81px; height:20px; background:url('http://platform.tumblr.com/v1/share_1.png') top left no-repeat transparent;">Share on Tumblr</a>