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1.
Someone who appears in video(s)/picture(s) on the internet, and will potentially be seen/known by strangers; especially for silly or inane videos/pictures.
Jason is quite the web-star, after the video of him throwing up in the toilet was posted; he can't walk around campus anymore without someone laughing at him.

or

He deserves to be a web-star: the bozo posted the video of him splitting his pants himself.
by Sue Cofer October 05, 2007