Yeh I agree-it makes the shoes look like they are too small and don't fit properly and it makes me feel stupid. I have 1 pair of dolly shoes that show a tiny amount of that but I hardly wear them and when I first put them on I noticed it straight away.
I hate it... I think it looks silly. Probably mostly cause I have really big feet though (size 10) Anything that draws attention to that irks me, so I avoid the whole toe cleavage thing. I guess if someone has really small petite feet, it would look cute. I guess...I don't notice it on anyone else though, just myself.