Yahoo Expanding Its Mobile Search

Yahoo is expanding its mobile is a short-code based SMS search system: Users send a message to “92466” — the numerals used to spell Yahoo on a telephone keypad — and get back direct responses to requests about local businesses, weather and stock quotes. The feature is initially available to Cingular, Sprint and Verizon subscribers.
It is also introducing technology that will open up its search engine to mobile handsets equipped with WAP…The WAP searches initially are available to Cingular, Sprint and T-Mobile subscribers.
Some more details in the release