As Guru clearly noted, popularity, specifically in rap itself is moreover based on the sound, not the content. Presentation has always been an important component of rap, and, it always will be.
However, without some intellectual notation in a rapper, the rapper will often be deemed as bad which has caused many people to ask: http://www.youtube.com/watch?v=Y9KC7uhMY9s
So, while learning from many greats, Spit yo game nikka, yes, I am aware that this is a forum for BODYBUILDING, but, I'm sure enough there are people who know the definition of a rhyme, and, this is purely for jokes and games:
Les' hear some drops, in fact, I will read your bars while listening to the instrumental you give me (if you do)