Top definition
Using twitter to comment on, or summarize an event, while it is ongoing. By restating what a speaker has said, posting quotes, or adding original reflections, the 'twitcaster' plays a similar role to a sports commentator.

Twitcasting provides an opportunity for attendants of an event to communicate with each other and share reactions about a speaker, while the presentation is ongoing.
The speaker encouraged 'twitcasting' by providing the hastag of the conference before getting started.
by vllhmn July 25, 2011
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