I just read this stupid Lifehacker article: Why Creative Geniuses Often Keep a Messy Desk.
1.) It mistakes Correlation for Causality, by suggesting that having a messy desk will make you a creative genius: “In case you are trying to be more creative, here are some ideas: instead of throwing out those magazines right after you’re done with them, leave them hanging around your desk.”
2.) Thirty-four Dutch students being rated as “More Creative” on a scale of 1-3 (as explained in the original study this article cites) is not the same thing as being a multi-billionaire businessman like Mark Zuckerberg. I would wager he is creative in spite of his messiness, not because of it.
3.) Regarding the photo examples of famous entrepreneurs with crappy workstations, it is likely you could find just as many “Creative Geniuses” who have clean / organized workspaces.
See also: Cargo Cult. If you want to read a good book on Creativity, I recommend the classic: A Whack on the Side of the Head: How You Can Be More Creative by Roger Von Oech.
Now, go clean your desks, you slobs.