Pressing tab one time usually lands you either on another form field or the actual submit button, which hitting the spacebar would submit. Autofocus is great o

Pressing tab one time usually lands you either on another form field or the actual submit button, which hitting the spacebar would submit. Autofocus is great on search engine homepages or search-oriented sites. Amazon isn't search-oriented when on the site. They assume their recommendations are usually spot on enough that you'll click through a percentage of the time, or that you googled straight into the product page (as most people do).