Live updates every second make displaying each individual tweet almost useless. It's damn near impossible to read as it constantly updates and moves the tweet of focus.
Either 1) follow Twitter's example and display a link at the top (including count) to load new tweets or 2) pick some other visualization mechanism to capture the deluge of data.
It's actually using WebSockets, so the tweets are being pushed, not polled. The pause button isn't the best interface, but the idea is to show the ridiculous number of tweets coming out of Madison.
Either 1) follow Twitter's example and display a link at the top (including count) to load new tweets or 2) pick some other visualization mechanism to capture the deluge of data.