Facebook caught ripping off advertisers
While testing Facebook’s advertising system, Limited Run noticed it could only verify about 20 percent of the clicks that were supposedly being converted to users showing up on its Web site. After trying a few analytics services to figure out the remaining traffic, the company built its own software out of exasperation.
It turned out the bulk of users had JavaScript disabled, making it difficult to track their clicks. So the company built a page logger, and allegedly found 80 percent of clicks it was paying for were coming from bots.
