I loved it! Between Twilight eating like a nerd (I heartgasmed), her expressions, the CMC being extra adorable (Scoota*squee*!), and them finally getting the upper hoof on Diamond Tiara and Silver Spoon, at least for a while, this was a fun episode, with a really good message for kids. Being popular isn't worth losing your friends.
It gets an "A" from me!