Found an interesting search tool called Eliyon Networking that allows you to see lists of people who have worked at a particular company. Apparently, it scraps the web for data, analyzes and weights in and generates a results page on the fly. For a free, you can search for people currently at a company.
I tried some searches and thought the idea was neat, though the execution is very flawed. Specifically, the site didn’t permit searching on anything but one keyword, which meant results were jumbled without apparent order and organization across many pages.
Also, thee are some wildly weird and innacurate scrapings-for example, a search for Yahoo turned up Chelsea Clinton as one of the past employees, is labelled as “Basketball Player, Secretary of Health and Human Services” based on two articles they scraped.