This article has some funny content. The idea of the first users being at the top of the hierarchy, and then Chuck Norris and Oscar Wilde, is funny. I am not so sure about other aspects. I don't get the farmers/merchants bit. And there are way too many problems with the execution of this article to give a higher score for humor. These are discussed below.
The concept of a caste system on Uncyclopedia is itself very funny. I would give a "10" for this, but there are two problems: First, the concept would not be funny to newcomers, and second, the article's title is misleading: it should be "The Uncyclopedia Caste System."
Prose and formatting:
This article suffers from fatal grammatical, syntax, formatting, and other prose-type problems. If the author's first language is not English (which seems may be the case), the author should have the article revised by a native speaker.
The one image of the chain of the caste system is very funny, but it also suffers from formatting problems. Moreover, there are no other images. This article needs more images.
I used the Pee Review Average Function for the score.
This article is a diamond in the very, very rough. I would be willing to give a more in-depth, second Pee review if/when a first round of serious revision is conducted.