As for the new Pinkie Pie episode I watched it again now and it was really good. It was written by Dave Polsky who wrote for season 1 and the episodes Feeling Pinkie Keen and Over a Barrel. Feeling Pinkie Keen was the episode where the "pinkie sense" got into the show and it was one of the funniest episodes. As for this episode it was pretty solid entry in to the "slice of life" type episodes for season 3 to start the season. There was more continuity from previous episodes.
I saw Rainbow Dash relaxing in the sun reading a book from the Daring Doo episode. I saw Tank from Find a Pet.
For Fluttershy There was continuity from 2 episodes Party of One and Lesson Zero. There was a bear in the episode which I am pretty sure the same one from Lesson Zero which was the one which Rainbow Dash and Fluttershy were talking about in Party of One to Pinkie Pie.
As for Pinkie Pie the main focus of the episode she was everywhere in this episode.There was lots of gags and such but at the same time there was also the balancer to the episode if you look at the episode closely. This episode I can relate to the message because online I am apart of a lot of fan bases and it is so hard to please everyone and it can get hard to do at times and I sometimes don't focus as much as I could or should on myself.
Here is a few episode reviews.
http://www.youtube.com/watch?v=GzXn89SqMrg and
http://www.equestriadaily.com/2012/11/too-many-pinkies-episode-followup.html