Twitter has just announced a new feature for their web based users called Hovercards.

The announcement was posted on the Twitter Blog by @jennadawn and summarized the new feature like this:

Because many of you use to read and write tweets, we’ve been spending some time focusing on ways to improve your experience on the site. Today, we’re introducing a feature called Hovercards that will be a handy way to interact with the folks behind each tweet.

On any timeline, as its namesake suggests, Hovercards are cards which appear when you hover over a username or avatar. The cards display additional information about the person and allow you to interact with them while staying within the context of your page.

Not everyone has this feature yet as it is being rolled out in phases much the same way Twitter has done for other new features. I am curious if any of you have it yet and what do you think of it?