In a recent interview with Rolling Stone, Busta Rhymes shared his opinion on the guest spot culture in Hip Hop. While some popular artists seem to be on everything, Busta explained why more lyrical rappers are often left out.

"There's one of two reasons to me why the same people appear on every song--one reason is either they're just the hottest dudes, and the other reason is," said Busta before pausing. "It's interesting to me that Eminem isn't on a lot of people's sh*t. It's interesting to me that Nas isn't on a lot of people's sh*t. It's interesting to me that Jay-Z isn't on a lot of people's sh*t. A lot of the very dangerously lyrical motherf***ers. I think there's a fear factor that plays a role, because sometimes you really don't know if you're going to be happy with what you asked for--especially if you might get your a** whooped on your own f***ing record!"

Source: hiphopblog.com