If we get to know that somebody shares his name with us, we tend to help this person. Especially if it’s a unusual name. Of course this can be used by sales people to influence us…

Literature

Burger, J. M., Messian, N., Patel, S., del Prado, A., & Anderson, C. (2004). What a coincidence! The effects of incidental similarity on compliance. Personality and Social Psychology Bulletin, 30(1), 35-43.