Layoffs are the first under internet company's new boss.
As Yahoo!'s growth stagnates, Chieif Executive Carol Bartz has been fired.
Social networking site's market cap valuation surpasses that of online giants such as Ebay and Yahoo
Ad-selecting tool to replace pre-roll clip when watching videos online
Fair Trade Commission of Japan sees no monopoly threat and gives the ok to web giants' alliance
Search engine partnership would dominate Japanese market, Microsoft likely to challenge
Online company suffered from summer advertising downturn, says chief financial officer.
Publisher to promote Yahoo ads across papers and TV.