Analysts split on whether new CEO is just what Yahoo needs, or whether move is 'deja vu all over again'
Politics and elections page offers users information based on Google searches, Google News views
Analysts expect big moves after Google and Bing maintain leadership positions in 2011
Online shopping becomes more social as big retailers turn to Facebook, Twitter, Google+
Tech topics, led by Apple terms, were hot this year on the annual Google Zeitgeist list
Users have a week to hide embarrassing pictures and status updates
