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In the early days of Web 1.0, micropayments were going to arrive any day now. Most web pages were written out of sheer enthusiasm, and micropayments looked like a viable economic model of the web. Instead of getting the content for free, you would have paid a small amount, say one cent, per page view. That would not have hit anybody’s wallet too hard, yet the most favorite web authors would have got a substantial compensation.
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Here at Xtract we get to work with data sets which are often in the form of networks. These may be, for example, social network data sets in online forums or links between web pages.

Often it would be useful to draw pictures of these networks, to understand better what their structure is. However, with networks that have millions of nodes, this is in practice impossible.

The problem of visualizing large networks is a common one and many different mathematical and aesthetical approaches have been taken to tackle it. Visual complexity is an interesting website, where a large number of network visualizations are presented.