How does 3 Pulse have so much information on my travels???

I recently got an email out of blue from3Pulse showing me all the countries I have visited having never heard of the site before. I don't remember having filled in my countries specifically on 3Pulse but I may have done because I have entered my countries in on-line sites in the distant past although I see that I am registered through a secondary Facebook account which I opened about 2 years ago but have never used and never posted anything on. What I am absolutely certain about is that I have never filled in all the cities and sites I have visited in my 131 countries and yet they are filled in on 3Pulse with better than 90% accuracy. I can find a few entries which I have definitely never visited which makes me absolutely sure that it wasn't filled in by me but HOW HAS 3PULSE GOT SO MUCH INFORMATION ON MY TRAVELS OVER 40+ YEARS??