Pretty sure they know if an Anon is color blind and if so which colors and shades of colors. They probably know if Anons have depth perception problems. No tellin' what all they learn from those captchas.
Pretty sure they know if an Anon is color blind and if so which colors and shades of colors. They probably know if Anons have depth perception problems. No tellin' what all they learn from those captchas.