I watched enough games this year to see that the new concussion rules for the NFL were observed sometimes but not always. There would be times where a player clearly took a major hit to the head and then came back into the game.
More evidence: this story. The San Diego Chargers essentially ended Kris Dielman's career. Well done. You would think by now that the on-going snowball of lawsuits might make a difference. Of course not. And with the owners still pushing for an 18-game season, the concussion problem is clearly not being taken that seriously. I am at the stage of giving the NFL one more season, and if I see players continue to be sent back in after sustaining concussion, I may stop watching. It will not affect the NFL, but I will feel less complicit nonetheless.