About the booing:
I'm a total noob to the PL but my impression has been that the supporters are the heart of the club moreso than in in any other sport. The fans were there before the current players and administration and will still be there after they are gone. The fans have every right to show their disapproval when it is deserved. It was well deserved today. It was a horrible loss at home to a team that some have tagged for relegation. Now, if we had played well and lost on a PK in the final minute and the fans booed the loss, that would be different.
There is nothing wrong with fans making their feelings clear about the play of their team.