As she approached her third anniversary as Yahoo's CEO, Carol Bartz couldn't overcome a recent string of missteps that apparently eroded the board's confidence.
Bartz, CEO of Yahoo since 2009, is replaced on an interim basis by Tim Morse, the company's chief financial officer.
Participants in Yahoo's 'Small World Experiment' will use their Facebook contacts to send a message to a randomly selected target.
Where are the users? That's what popular websites including Yahoo, Google and Facebook are asking the Internet engineering community.
Facebook.com is by far the most typed address, three times more popular than the google.com, according to data from URL Fixer.
Yahoo App Search indexes iPhone and Android apps, and an iPhone app called Y AppSpot provides personalized recommendations and a search function.