BEIJING, March 27 (Xinhuanet) -- Yahoo Inc. is recruiting other Web sites Tuesday to help make its mobile search services more useful for consumers and advertisers, marking another step to build a lucrative sales channel beyond the personal computer.

    Earlier this month, Yahoo expanded the reach of its OneSearch mobile search application, making it available to more mobile Web users.

    Yahoo is releasing some tools for publishers to submit their content to the OneSearch index or Yahoo Mobile Media Directory, and to sign up to show ads on their mobile sites from the new Yahoo Mobile Ad Network.

    Launch partners in the Mobile Ad Network include MobiTV, Opera, and go2. The first ads will go live in the second quarter, with more partners to be added in coming months.

    The Yahoo Mobile Content Engine is a tool to help publishers integrate their content into the oneSearch index. Publishers can use Yahoo's Mobile Site Submit to provide information about their mobile site, such as a description and relevant tags, to ensure that their sites are accurately indexed in oneSearch.

    Publishers can also submit mobile media content, such as ringtones, games, video and applications, to the Yahoo Mobile Media Directory.

    "We think 2007 is going to be a watershed year for the mobile Internet," said Steve Boom, a Yahoo senior vice president.

    Mobile ads are expected to generate about 1.5 billion U.S. dollars this year. Within the next three months, Yahoo plans to start distributing some of those ads to other mobile Web sites accepted into its network, Boom said.

    (Agencies)