[uid.com] features an animated bubble scatterplot to convey a visual overview of Twitter's most popular conversation subjects in time.

Each subject is represented by a unique bubble, of which the size corresponds to its popularity. Popularity has also been mapped to the vertical location of the bubble, whereas the horizontal position represents a subjects's longevity, that is how long a specific subject has been discussed. A time bar allows for various forms of interaction, such as selecting the time period shown, which can range from months to hours.

Thnkx Juliane.