Yep, I love toe cleavage when they wear certain shoes.
Only if they stink.
Only if they're unusually attractive or unusually unattractive. Feet can be pretty, especially with the right kind of shoe/sandal but a fat foot in a flip flop is a turn-off.
Some feet are big, some are small (Mrs Didge has small feet but they hurt as much as big ones if I don't do what I'm told) and some feet are just downright disproportionate. Like those pictured below.
I can tell you my husband doesn't. If he didn't see the charge for the nail salon on the bill he would never know how often I got a pedicure.