Facebook forecasts rising ad sales despite dip in usage

Shortly afterward, though, Facebook executives expressed optimism on the call with analysts, saying the changes they were making in response to criticism would be healthy for the business in the long term and might not even hurt much in the short term.

"I want to be clear: The most important driver of our business has never been time spent by itself. It's the quality of the conversations and connections," Chief Executive Mark Zuckerberg said on the call.