> "For blockers to get around these changes, Facebook said they would have to begin analyzing the content of the ads themselves, a costly and laborious process."

I don't think anybody at NYT has ever come across 1 of the longest digital battles since the internet became a thing, otherwise known as: P2P

Where there is a will, there will be a way. For every piece of software that will hide ads, someone out there will likely begin to write software to block this, simply cause some shitty ad ruined his/her Mafia Wars/Farmville experience.