Think of Tumbl.in as “the StumbleUpon for Twitter” and you will have a good idea of what to expect from the site if you decide to pay it a visit.
Because that’s the exact truth of it. The site lets you find interesting links on your Twitter timeline, as well as in your Twitter favorites and in any Twitter list in the same way that StumbleUpon lets you discover the best of the WWW: at random.
The objective is the same in both cases: to let you find appealing content that you would otherwise be unaware of. But when it comes to Tumbl.in you can actually toggle between this “random” mode, and another mode letting you visualize only your favorite content. In that sense, Tumbl.in offers a whole new way to browse tweets.
My personal take on Tumbl.in is that it is an interesting service. It could never have the same impact as StumbleUpon for the simple reason that it revolves around a specific service, as opposed to StumbleUpon which scours every single corner of the Web. Yet, the social curation championed by Tumbl.in is an interesting development. It might be setting the scene for something even bigger and better to come along.
Tumbl.in In Their Own Words
“Tumbl.in is the easiest way to browse links.”
Why Tumbl.in It Might Be A Killer
It will let you see tweets placed in a whole new light.
Some Questions About Tumbl.in
How successful can such a service really become? Will people take to it and start consuming tweets in such a setting? 
