Facebook is the widget king, but some of the subjects in the social network's kingdom might not be happy with the new caste-like system it will announce this week.

According to Kara Swisher at BoomTown, Facebook will announce a new tiered system that labels some third-party developers as "preferred." Causes and iLike are expected to receive the vaunted status, while a majority of the other apps will be lumped into a middle category. A bottom tier will designate untrustworthy or spammy applications.

In addition to the new tiered system, Facebook will reportedly unveil an applications store on Wednesday during the F8 conference in San Francisco, according to TechCrunch. This could be a major victory for developers, considering the Facebook platform was almost labeled dead less than a year after its launch.

But will users pay for Facebook applications? Slide CEO Max Levchin thinks so. In a recent interview with TechCrunch, Levchin said Facebook needed an apps store to help developers get paid, and he added that the social network needs "clear philosophical rules" to aid developers.

Levchin's comments should come as no surprise, considering that Slide's Top Friends, one of the most popular applications on Facebook, was temporarily suspended because of privacy concerns.