Seems to be down now. Here's the text-only cached copy: http://209.85.173.104/search?q=cache:http://abeautifulwww.com/2008/09/08/20-useful-visualization-librar

Seems to be down now. Here's the text-only cached copy: http://209.85.173.104/search?q=cache:http://abeautifulwww.com/2008/09/08/20-useful-visualization-libraries/&hl=en&sa=G&strip=1 http://209.85.173.104/search?q=cache:http://abeautifulwww.co... The original web page with the images looked better.