I too was solicited by this company. They are running under the Stanford Who's Who and the Cambridge Who's Who... and, yes, supposedly, it is a free listing. They say they will post a "standard" profile for you for free if you keep telling them no but they will aggressively try and get you to sign up for a bronze, silver, gold or platinum membership (if I remember correctly) for hundreds of $$$'s.
This 'company' has tried to call me twice today. Both times not leaving an answer. I live in Vancouver, British Columbia, Canada. I think I will be contacting the RCMP if they call me again. It is obviously some scam.
They called me twice today--I didn't answer. They are a scammer trying to get money. Not a legitimate service, as I researched them and came up with the same info from everyone. Beware.