The system of "search tips", similar to Google Suggest, has now appeared on the
Yahoo site. The name of the function is more than predictable - Search Suggest.

When you enter a search query, if he, of course, is not any cleverly learned, a drop-down box appears with tips - they say, are you looking for this? By the way, this option is already available in the Yahoo Toolbar for the Firefox browser since last March.
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Meanwhile, Google Suggest noticeably overtakes its competitor - for example, it already
“guesses” requests like “ya krivetko” .
via
CNet Blog