[jontas]

It's just an HTML/CSS/JS sandbox with collaborative features, similar to jsfiddle, which I believe is more well known (at least, among the people I work with).

I haven't used jsbin before, but the interface looks nice, and the redesign is pretty. Jsfiddle is utilitarian; jsbin looks like it is meant to have a little more humor. They both seem to cover the same functionality, so I guess it comes down to which interface you prefer.

For quickly sharing some small piece of front end code with a remote colleague, either one of these tools is very useful.

Edit: I just noticed that visiting jsbin.com skips the whole landing page with the spinning robot, so it seems that it is as utilitarian as jsfiddle.