Facebook Inc keeps finding new and potentially annoying places to sell advertisements in its digital hangouts. That's good news for the company's bottom line, but it also may signal weakness.
Along with Facebook's controversies of late have been a steady drip of disclosures about fresh spots for Facebook's paid commercial messages. The company recently started testing different types of ads in Marketplace, its Craigslist-like section for people to buy and sell merchandise, and in Facebook Stories, its Snapchat-like video diaries.