Nametrix is an iOS app I created initially for baby naming, but it ended up being way cooler than that. It uses public data on millions of people (US census, US campaign contributions, Wikipedia) to determine what professions, political parties, and other affiliations each name tends toward. For example, Ellen is a disproportionately common name for 1) psychotherapists, 2) librarians, and 3) activists. Ellens also overwhelmingly lean toward the Democrat party and have tended to be most popular in the northeastern part of the US. As far as I know, nobody else has made anything remotely like this... Pretty fascinating stuff, right? What other kinds of metrics would you like to see?