Governor Palin's speech at the Republican National Convention last night corresponded with a dramatic increase of tweets per second. This graph represents hourly update activity on Twitter over two days this week. Like hurricane Gustav on Monday, and Google's new browser launch on Tuesday, Palin's official nomination acceptance on Wednesday is another example of Twitter being used in real-time during a massively shared event. We continue to see increased activity during storms, earthquakes, breaking news, and more but Politics in particular continues to drive updates, discussion, interaction, and other sustained activity on Twitter.