Thought I'd add my two cents. ;)

Socks with sandals are okay if the socks are white or light in color and don't go up beyond the ankle. Hey, some people get sweaty feet! I'd rather see these people in socks and sandals instead of smelling their foot odor.

Flip Flops....I personally despise them! To me, flip flops are a sign of laziness. Unless you're on a beach somewhere, there is really no need to wear them. :)