Just as the Mexican government appeared to be growing savvy in using social media to fight the drug war, prosecutors mistook a man on YouTube for a cartel leader and put $2.5 million bounty on his head.
Mexico's federal prosecutor's office discovered on YouTube photos of the alleged leader of the Tijuana Cartel, showing him posing on a beach and riding in a boat, and reposted them on its Most-Wanted website.
The government on Wednesday announced that 15,273 people died in the Mexico drug war in 2010.
The death of Mexico's top drug lord gives President Calderon a much-need victory in his three-year old strategy of using the Mexican military to attack drug-trafficking cartels, say analysts.
In a raid Wednesday, Mexico police shot Arturo Beltran Leyva, the "boss of bosses," the top drug lord in the country. Beltran is the highest ranking figure taken down since President Felipe Calderon took office in 2006.
Who are the most powerful cartels, what are the risks of using the military to confront them, and how much progress has Mexico made so far?