Has anyone tried Tumblr if it can serve as a good source of traffic? Tumblr.com is a service that combines them online Blogging offers a free service for bloggers classic, such as Blogspot, a micro-blogging services such as Twitter. Tumblr can write anything without restrictions like Blogspot, but may also pursue other blogger currently living, as well as Twitter. I would like to read any experience from those who have used or still use Tumblr as a traffic source.