This animated map from FlowingData shows the global location of each Twitter post tagged as #inauguration between Monday and Wednesday this week.
Although the world map isn’t shown, over time the US and the UK become almost perfectly defined by the density of Twitter post markers. You can also see outlines of south America and western Europe.
http://projects.flowingdata.com/inauguration/
The big flurry happens when the US wakes up on Tuesday morning…