As I was oohhing and ahhing my way through the flickr album of the incredibly gorgeous home of fellow blogger Sam Reitmayer Sano,  I spotted a few noteworthy ideas for organizing shoes:

A shoe tree makes use of vertical space and since most models rotate, it allows for easy access.
 
Use the gaps of a wooden crate to hang your heeled shoes.  A unique idea for those who like to display their shoes and have something unexpected in their space.

Under-shelf wire baskets are usually seen in kitchens, but they're great in closets too. They maximize space and are pretty versatile.  Tip: If you shop for one of these baskets, whether online or in-store, make certain it's tall enough to fit the type of shoe you want it to hold.  Measure first, then shop!
*To see the rest of her swoon-worthy home click here.