Facebook allows advertisers to target users in mainland China, despite national ban; Facebook says this is intentional, as a "small fraction" can circumvent ban (Sarah Frier/Bloomberg)

Sarah Frier / Bloomberg:
Facebook allows advertisers to target users in mainland China, despite national ban; Facebook says this is intentional, as a “small fraction” can circumvent ban� —  - Social network has been blocked in mainland China since 2009  — Ad archive shows messages targeting Beijing, Shanghai, Yunnan