"The Deadly Underground World of Dogfighting on Facebook" report demonstrates how prevalent and easy it is to find dog fighting.
"The problem is trust. No-one has any in Facebook right now," social media expert Matt Navarra told Newsweek.
"I'm not a shill for Twitter, I enjoy the fact the president is on Twitter and he follows me," Rivera said.
"We've fixed the underlying issue and are notifying people whose contacts were imported," Facebook said in a statement.
"Evidently, in Palo Alto there's a rule or regulation that you can have six livestock on any lot of land, so he had six goats at the time," Jack Dorsey said.
One patient at Zuckerberg San Francisco General hospital was charged more than $24,000 to get a broken arm treated, a price equivalent to 12 times Medicare rates.
"I'm not going to disagree with you that we've damaged public trust through some of the actions we've taken," Facebook's Vice President of Policy Solutions Richard Allan said.
"We're up against smart and well-funded adversaries who change their tactics as we spot abuse," Facebook executives said.
WhatsApp co-founders Brian Acton and Jan Koum have both left Facebook, which acquired the company in 2014 for $22 billion.
In one English-language post, a parody cover for "The Notebook" featured North Korean leader Kim Jong Un embracing the U.S. president.
Shares in the social-networking platform plummeted by as much as 24 percent on Wednesday.
WhatsApp will remove a "quick forward" button next to media messages for Indian users.
"I personally find Holocaust denial deeply offensive," Zuckerberg stressed.
Sandwiched between a promise to protect Mexico's election and the announcement of a gaming platform was a notification that a bug had impacted 14 million users.
Several Russian lawmakers called upon "Russophobic" Facebook CEO Mark Zuckerberg to give testimony over user privacy concerns.
The president's eldest son attributed the decline in new followers to a disclaimer he said appeared when a friend searched for him on the app. That disclaimer did not appear when Newsweek searched for Trump, Jr.'s name on multiple devices.
The figures emerged as part of an audit of third-party applications first announced in March by CEO Mark Zuckerberg.
How many of these do you remember seeing on your timeline?
"I'm setting up a small group to explore how to best leverage blockchain across Facebook," said executive David Marcus.
The Facebook CEO could be forced to appear before the U.K.'s Parliament next time he enters the country.
One lawmaker called the whole thing a "stupid and ridiculous" hearing, while several others left the room.
Facebook CTO Mike Schroepfer testified in front of the U.K government's fake news committee.
Kogan appeared before the U.K. Digital, Culture, Media and Sport Committee's inquiry into fake news.
The U.K. government is studying the effects of fake news as ex-Cambridge Analytica staffer Brittany Kaiser teased fresh revelations.
Facebook scoops up users' data as they navigate across the internet, but its far from the only one.