Taz. India and Raj,
A clarification is required for both of you.
The person did not mean the same persons' resume on different job boards. Sometimes what happens is - people belonging to the same project / or a group of friends...try and copy the same resume for everyone in the team and post it on the web. I had such an experience where I found the resume of two people - in different companies though, having the same project title, same client, same kind of analysis done - and teh best part was - it was like a copy,paste..not a single comma differed. So in this case, I knew that either oif them would have copied or both of them would have ofaked their representation.
So this was the point mentioned by the person in the "Bold" statement.
Worse-case scenario, a person would have two to three different resumes of his own posted through different email addresses, but having different functions highlighted. Eg: Candidate A will have two resumes - one that highlights only his HR skills, and another resume that highlights his marketing skills alone.
More than one person can work on similar projects - but it would be foolish to believe that each them will have the same responsibility, same achievements....
Srionline:
That was a real good set of methods to identify a fake resume. This calls for a lot of pro-activeness on the recruiters end. This is what makes a recruiter perfect! Good Job - you reminded me of my basics when I joined an IT recruitment firm during the initial period of my career---thats where I learnt abt recruitment :-)