A Benchmark Co. analyst downgraded share of Yahoo Inc. Thursday, noting issues like better-scaled competitors grabbing a bigger share of the search market and increasing competition in display advertising.

WASHINGTON — Microsoft Corp. and Yahoo Inc. have received clearance from regulators in Washington and Europe to proceed with a search partnership intended to challenge Google Inc.

A Benchmark Co. analyst downgraded share of Yahoo Inc. Thursday, noting issues like better-scaled competitors grabbing a bigger share of the search market and increasing competition in display advertising.

Yahoo Inc.’s “competitive position is weakening,” according to research published Monday by Morningstar analyst Larry Witt.

Shares of Yahoo Inc. climbed Monday as a JMP Securities analyst upgraded the Internet company, citing a potential a boost from its search deal with Microsoft Corp.

Yahoo Inc. CEO Carol Bartz says she hopes investors growing impatient for her to turn around the slumping Internet company remember how long it took for Steve Jobs to revive Apple Inc.

SAN FRANCISCO - Yahoo has something new to yodel about: tweets. In its latest attempt to make its Web site more compelling, Yahoo Inc. is plugging i

SUNNYVALE, Calif. - Yahoo Inc. CEO Carol Bartz says she hopes investors growing impatient for her to turn around the slumping Internet company remember how long it took for Steve Jobs to revive Apple Inc.

Yahoo Inc. has formed a global partnership with Twitter to integrate Twitter’s real-time social experiences.

Yahoo has something new to yodel about: tweets. In its latest attempt to make its Web site more compelling, Yahoo Inc. is plugging its services into the rapidly growing craze of posting short messages, or “tweets,” on Twitter.