Social discovery site, StumbleUpon is not the most hyped or talked-about site in the social medium. Yet, it has reportedly accumulated over 7 million users, making it almost 50% larger than the much-hyped Twitter.
With the launch of Social Ads, Facebook is trying to take online advertising to another level altogether. This form of marketing is based on highly targeted advertising and peer publicity. The individual choices of a user show up as ads in the news feed of all friends and acquaintances in his or her network. Trusted recommendations and referrals form the basis of this advertising strategy.