EditorsCloset.com/omag: Main focus is on accessories.
Gilt.com/oprahmagazine: Savings of up to 70 percent.
HauteLook.com: Private sales of everything from home to beauty to fashion.
RedTagCrazy.com: Sells one discounted item at a time, in limited quantities. You can arrange e-mail and cell phone alerts.
Ideeli.com: More than 300 luxury brands; sale events and giveaways. Use code OPRAHMAG for an invitation.
RueLaLa.com/oprah: Two-day sales with lots of inventory.
TheTopSecret.com/O: Use code O to get $15 off in September and October.
EBay: Vintage finds.
PriceProtectr.com: Tracks price fluctuations on a given item so you can jump on a sale. They'll also show you how to get money back after you've already bought an item.
RetailMeNot.com: Offers printable coupons and online discounts usable at places like Macy's, Ann Taylor and The Gap.
ShopItToMe.com: You pick the brands and sizes that interest you (there are more than 600 to choose from), and ShopItToMe will send you e-mail bulletins about online sales.
RehashClothes.com: Photos of giveaways—think accessories clothes and books—are posted and members make a deal. You only have to pay postage.
SwapStyle.com: The same concept as RehashClothes. Focused on clothes, accessories, cosmetics and shoes.
Get 6 strategies for smart online shopping and find out what to ask before you buy