The bad interactions:
- NorthWest's web site disables the paste command in the credit card number field when checking out. I store my credit cards in a document on my computer. I've always copy and paste them into checkout forms. This is the first time I've ever run into a problem. I ended up working around it by pasting it into the name field, and dragging it into the credit card number field. But seriously, why would you want to do anything in the checkout UI that might prevent a customer from buying your product?
- Technorati doesn't place focus in the search field. Isn't this the #1 reason why someone goes to the site? To perform a search? Google gets it right. So does Yahoo. Even Live, Ask, and more obscure sites like IceRocket get it right. Why don't more web sites thoughtfully set the focus into form fields?
- The Marriott Courtyard's TV interface always made me laugh. Why bother asking the user for a piece of information (like your room number) if the system already knows it?