Its as if theyre saying a motto... hmmm lets see... AJ: Our frienship is the magic Rare: that will peirce the heavens RD: JUST WHO THE HELL DO YOU THINK WE ARE?! Flutters:Well... if thats,uhm,ok with you..
The ponies are popular because of the show, the show's not popular because of the ponies. The show became popular because of a combination of incredible animation, compelling characters, and well written story
Rainbow dash(the rainbow one) might not be the most popular but, she's up there. She's liked for being loyal, protective, tenacious and almost always awesome in some way(even coming from a non-brony).