Microsoft CEO Steve Ballmer speaks to shareholders at the Microsoft annual shareholders meeting in Bellevue, Washington, November 19, 2008. (Xinhua/Reuters Photo)

Brad Williams, a Yahoo spokesman, said Sunday "We don't comment on rumors." Frank Shaw, a Microsoft spokesman, declined to comment.

Yahoo's shares have plummeted since Microsoft withdrew its 33-dollar-a-share acquisition offer earlier this year, eliciting speculation that discussions would eventually resume. Yahoo's shares closed Friday at 11.51 dollars, nearly one-third of the original offer.

Editor:Yang Jie