Personas (MIT project)
I tried the MIT Personas site just to see what it would come up for my name. Basically, it does a Web search for any name you give it and analyzes the text on a semantic level to find common themes or categories for content from you or about you (e.g., it might suggest topics like "sports", "legal", "social", "management", "online", etc.) How it does this is a little beyond my knowledge of semantic processing, as well as what practical use this is seems to escape me.
But it's fun. :)
Some issues with it, is that because it searches on people names across the Web, the content may mistake e.g., one "Luis Suarez" (our own blog-evangelist) with another "Luis Suarez" (soccer player). It helps if you have a globally unique name like "Rawn Shah" (so far). Another problem is that the results may vary depending on how it processes whatever search results it finds. So, in trying it out three times to see how close it was, it showed slightly different categories for me and sized these differently as well.
I can't figure out why the following categories appear since I rarely if ever talk about them: military, religious, religion, genealogy