The point at which your normal internet browsing routine has ended and you are just going from site to site to site repeatedly out of pure boredom.
Person: I've checked facebook, YouTube, and Twitter like a million times and nothing is going on! Maybe If I check one more time...

*1 hour later*

Person: Damn, I've been Site Jumping haven't I?
by Amazingboy97 November 29, 2010
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