This image was lost some time after publication.

Two tipsters tell us Facebook's billing systems are broken, undercharging them for spending on Facebook's Social Ads. "Ad men, like yours truly, are reporting missed charges," one tells us. Another:

Have you heard anything about the problems Facebook is having with Social Ads? Today my company was undercharged about $225 for yesterday's ad spend. That's a good way to stay unprofitable.

The advertiser wonders: "Maybe somebody should tell Sheryl Sandberg that cutting company subsidies won't help if you can't accept money. "