Apple Event?

The Tweet-o-Meter measures the amount of tweets (measured in Tweets per Minute or TPM) received from various locations around the world. The gauges are updated every second giving you a live view of the TPM's in each location.
Tweet-o-Meter is designed to mine data for later analysis relating to furthering our understanding of social and temporal dynamics for e-Social Science within the Twitter demographic. The system is under development here at CASA as part of a wider survey tool as part of the NeISS project in association with Urban Tick and coded by Steven Gray.
See yesterdays introduction to Tweet-o-Meter post for full details and the music video behind the original choice of cities or head direct to the Eight Cities Head-to Head Tweet-o-Meter Page.