I use Shoebuy all the time! Yes, they ship slower than Zappos but often times they have better prices too, and good sales. Never, ever had a problem with returns either. I've used them maybe 3 dozen times (dang kids, keep outgrowing their shoes!) I also have used shoes.com; onlineshoes.com; piperlime.com without a problem either.
The only shoe site that was a problem was lordjohnsfootwear.com. They charged me for shoes they never sent and there was zero customer service and I mean zero. No phone #, no response to emails, nothing. I had to go through my credit card company to get my $$ back. I can't even unsubscribe to Lord John's email blasts--they have no way of getting off their list!! They are pure evil...
Jonahnah
Chocolate IS the answer, regardless of the question.