The Hangover star Zach Galifianakis was declared the big winner at the 15th annual Webby Awards on Tuesday after landing four prizes, including trophies for Best Web Personality and Best Online Variety Show.

Organizers of the awards - which celebrate the best of the net - picked pop star Justin Bieber for Best Comedy Video for his April Fool's takeover of Will Ferrell and Adam McKay's website, in which he re-posted some of his own viral videos.

Friends actress Lisa Kudrow took home two prizes for her show Web Therapy and rock band Arcade Fire claimed two Webbys for the Wilderness Downtown music video.

Late night TV host Conan O'Brien was also honored for Best Celebrity or Fan Website, while Ferrell and McKay's site nabbed nine of its own.

The prizes will be handed out in a ceremony in New York City on June 13th.


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