Here's what you missed this week in the world of social media and technology:

• Facebook Simplifies Ad Buying - On Tuesday, the social network unveiled a major overhaul of both its basic ad-buying platform, Ads Manager, and its more sophisticated offering, Power Editor, both of which now boast a more streamlined interface.
• China Has More Internet Monitors Than Soldiers - China has 2 million people working as online monitors — a new estimate that reveals the breadth of the country’s massive online censorship and surveillance systems. The monitors outnumber China’s 1.5 million active military personnel.
• Apple Will Hold Fall iPad Event on October 22 - People familiar with Apple’s plans say the company will hold its next invitation-only event on Tuesday, October 22. The focal point of the gathering will be the latest updates to the company’s iPad line, but the new Mac Pro and OS X Mavericks will likely get some stage time as well.
• Comcast Subscribers Can Soon Watch TV via Twitter - NBCUniversal and Comcast announced Wednesday that they have entered into a partnership with Twitter that will let "millions" of Xfinity TV customers view TV shows and movies via tweets through a new feature called See It.
• Pinterest Rolls Out 'Promoted Pins' Ads - Nearly a month after Pinterest announced it would begin rolling out “tasteful” promoted pins, the feature is finally visible to users starting Wednesday.
• The New Version of FaceBook Page Insights is Here - Earlier this year Facebook invited Page owners to try a new version of Page Insights designed to help create better content and provide admins with more information about the people that visit their pages. On Wednesday, after gathering feedback from the early users, they rolling out the updated Page Insights to all Page owners.