Ads in your Facebook News Feed aren't new: Earlier this year, Facebook launched Sponsored Stories\u2014ads disguised as posts from a business page that display existing posts or activity that mention the business.\n\tBut that appears to be only the beginning. As Facebook continues to face mounting pressure from investors over its slumping stock, the social network is slowly ramping up its advertising efforts.\n\tAccording to reports, Facebook has started testing a new web and mobile News Feed ad that lets business pages push posts to peoples' News Feeds, even if they didn't subscribe to them. Previously, the only way for advertisers to reach Facebook users who hadn't liked their page was through the sidebar ads or Sponsored Stories.\n\tFacebook says it wants "to be thoughtful" about how it introduces ads in users' News Feeds, so it has "limits in place to ensure that people's News Feeds are not filled with advertising," according to TechCrunch, though it wouldn't give specifics.\n\tWhile Facebook may indeed set limits to how often you see these ads, just one will be too many for many users' liking. News Feeds have become barely manageable with too much clutter\u2014from annoying game posts to pictures of your friends' babies.\n\tShould Facebook decide to roll out this new ad to all users' News Feeds, it needs to do so carefully. Patience with Facebook is already running out.