Made using Windows prog last.fm Extra Stats - <a href="http://www.last.fm/user/C26000/journal/2006/07/30/383m_last.fm_extra_stats" rel="nofollow">http://www.last.fm/user/C26000/journal/2006/07/30/383m_last....</a><p>via @shaggorama - In case anyone is looking for tutorials to make this type of graphic on their own, this style of graphic is called a stream graph . Here are some demos:
D3 - <a href="http://bl.ocks.org/mbostock/4060954" rel="nofollow">http://bl.ocks.org/mbostock/4060954</a>
Protovis - <a href="http://mbostock.github.io/protovis/ex/stream.html" rel="nofollow">http://mbostock.github.io/protovis/ex/stream.html</a>
Processing - <a href="https://github.com/leebyron/streamgraph_generator" rel="nofollow">https://github.com/leebyron/streamgraph_generator</a>
Python - <a href="http://code.activestate.com/recipes/576633-stacked-graphs-using-matplotlib/" rel="nofollow">http://code.activestate.com/recipes/576633-stacked-graphs-us...</a>