If you're not familiar with the concept of "personas" in marketing and user experience, here's a definition from Wikipedia:
Personas are fictional characters created to represent the different user types within a targeted demographic that might use a site or product. Personas are useful in considering the goals, desires, and limitations of the users in order to help to guide decisions about a product, such as features, interactions, and visual design.Here's my persona profile generated by the tool. I have to say I agree mostly with the assessment.
You can get a lot more information on the MIT Personas Project here.
I imagine this tool works best on unique names, like mine. I think there's an Erin Eschen in Florida, but this one picked up on my content primarily. If your name is "John Smith," you're probably not going to get anything out of it. Additionally, if you're not one to put much out there publicly online, it isn't likely to give you much back.