O como mínimo eso parece deducirse de lo que dicen en una de las últimas entradas en TechCrunch sobre correo y redes sociales:
A recent test version on a Gmail account I have seen, brings up a slider which allows you to visually morph the themes contained in your email over time, and creates tag clouds of people and key words. Click on a word like ?important? and you get a tag cloud and a graph about people most associated with that word.
Qué trescero. Yo quiero… Fuente