Facebook on Wednesday said it has taken down some 5.4 billion fake accounts this year in a sign of the persistent battle on social media against manipulation and misinformation. {"preview_thumbnail":"https://cdn.flowplayer.com/6684a05f-6468-4ecd-87d5-a748773282a3/i/v-i-2…","video_id":"2f074372-b3fa-4f9f-8191-57992d2241ce","player_id":"8ca46225-42a2-4245-9c20-7850ae937431","provider":"flowplayer","video":"10 Highest Average Cappuccino Prices Around the World"} Amid growing efforts to create fraudulent accounts, Facebook said it has stepped up its defenses and often removes the accounts within minutes of their being created. "We have improved our ability to detect ...