I had the chance to be part of the private beta of a new twitter service called sumtnsumtn. Basically this service allows me to tweet directly about a particular website. To do this all you have to is to log in on sumtnsumtn.com with your twitter account (This should be only necessary during private beta) and to place a bookmark in your browser. Once you are on site you would like to tweet about all you have to do is to press the bookmarked link and a sidebar of sumtnsumtn will show up (see the picture).
Within this bar I can write my point of view into the tweet and publish it. The software automatically adds the URL to the tweet. I also can see what other persons were tweeting about this particular URL (this feature will make more sense as soon as more people will use sumtnsumtn)
To sum it up: Quite useful when you want to share your view on URLs directly on twitter.
