That is likely to mean that fewer fans of a retailer will see its notice about a big sale and fewer fans of a video game company will see a post promoting its latest app. Even posts from big advertisers that spend millions of dollars on Facebook ads will vanish from the news feeds of their fans unless they turn them into ads. “It’s a clear message to brands: If you want to sound like an advertiser, buy an ad,” said Rebecca Lieb, a digital advertising and media analyst at the Altimeter Group. Facebook says that it’s all for the good of the users and that creative, engaging posts will still attract attention and bubble up into the feed. Marketers have little choice but to play along. Facebook has accumulated one of the biggest vaults of consumer data in the world. It dominates social media advertising the way Google dominates search ads, and analysts say that brands will keep flocking to the service. Get the full story at The New York Times and TechCrunch Read also "Facebook isn’t evil for blocking promotional Page posts" at GigaOM