are you sure? then you probably never heard about surveys!
^ surveys? on sizes?
ya ya heard a lot! of course the first one to read about those interesting surveys :D
but you know what? I DO NOT believe in research and surveys** to a certain point**.
The researches are done to "prove" a point, and they go after the "mass" that CAN prove the point. Surveys are always partial because you really don't know who participated... and what their background was. Surveys are never accurate.