Yahoo and Google, the world's two biggest search engines, have announced a two-week experiment that will see them share advertising space.During the pilot, Google will be able to place ads alongside 3% of search results on Yahoo's website.
Analysts say the move is designed to frustrate Microsoft, which has offered to buy Yahoo for $44.6bn (�22.6bn), or extract a higher offer.
The news came as both sides were reported to be forging other alliances.
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