Your data will remain as anonymous as it can be on a site devoted to broadcasting your every move.

ENGADGET

Compare this to the way ad networks track your identity as you move from one site to another.

FORBES: Privacy and payment platforms try to get along

EWallet is a small browser extension that you "carry" as you move from one Web site to another on your shopping spree.

CNN: Don't forget your eWallet when you shop online

Others include deals (hotels offering deals move up the rankings), referring site (which can reveal a lot about your preferences), return visits (Orbitz learns your tastes), and location (folks from Greenwich, CT probably see more expensive hotels than those from El Paso).

FORBES: Are Windows PC Users A Budget Hotel Crowd?