Check out Personas - an MIT experiment. Enter your name on the website...
...and Personas scours the web for information and attempts to characterize the person - to fit them to a predetermined set of categories that an algorithmic process created from a massive corpus of data. It will then give you something like this:
The computational process is visualized with each stage of the analysis, finally resulting in the presentation of a seemingly authoritative personal profile.
Unfortunately, I'm the only Freya McOmish in the world (I think) so it just replied with "no digital traces found" - but other people may have more luck!
via Peter, thank you!