Helen, People search engines such as Pipl.com and KGBpeople.com came in handy many times for me when trying to skip trace MIA graduates. When using people search engines, it's best to use multiple tools since each scans different social networks for data. They simply are tools to help you optimize your researching skills by leveraging the data on social media platforms. Make sure to explore all the tools in the resources section related to people search. I have found that many career services professionals are not using these tools to help themselves be better "private investigators." If they can help you track down one person, it could make all the difference! Robert Starks Jr.