This is the code used for the following paper :

Owen Kaser and Daniel Lemire, Tag-Cloud Drawing: Algorithms for Cloud Visualization. In proceedings of Tagging and Metadata for Social Information Organization (WWW 2007), 2007.

http://arxiv.org/abs/cs.DS/0703109

http://www.slideshare.net/lemire/tagcloud-drawing-algorithms-for-cloud-visualization-presentation