Are Cheap Skateboards OK?

With how popular skateboarding is, there are piles of cheaper skateboards out there. Some just look cheap, but some have trusted brand names, or even pro skateboarder endorsements. How do you tell if a cheaper skateboard that you've found at your local department store or sporting goods section is a good skateboard or not?

Source: http://skateboard.about.com/od/skateboardingfaq/f/FAQCheapBoards.htm

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