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Live tweeting an event on the social networking site twitter. This usually involves tweeting with a hashtag for the event. Others search for the hashtag and then see all of the tweets with that hashtag.
During the South by Southwest conference Jill was tweetcasting the event by tagging all of her tweets related to the event with #SXSW
by MJ Christenson October 30, 2013
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The vengeful act of crapping on a lover's chest while they sleep.

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