By Alexei Oreskovic SAN FRANCISCO (Reuters) – Google Inc executive Susan Wojcicki has been appointed new head of the companys YouTube video business, a source familiar with the matter told Reuters. The move, in which Wojcicki will replace Salar Kamangar, represents the latest change to Googles top properties by Chief Executive Larry Page and comes as Google is striving to turn the popular video portal into a bigger money-maker. Google does not disclose YouTubes financial results, though analysts believe the website generates several billions of dollars in annual revenue from video ads and other promotions. She shared the title with Sridhar Ramaswamy, another Google executive.