(This article was first published on Graph of the Week, and kindly contributed to R-bloggers)
Graph of the Week is blacked out today (January 18, 2012) to join in the online protest to the SOPA and PIPA bills.Helpful links:
http://blog.reddit.com/2012/01/technical-examination-of-sopa-and.html
http://yro.slashdot.org/story/12/01/18/0834219/ask-slashdot-what-can-you-do-about-sopa-and-pipa
http://en.wikipedia.org/wiki/Wikipedia:SOPA_initiative/Learn_more
http://blog.mozilla.com/blog/2012/01/17/mozilla-to-join-tomorrows-virtual-protests-of-pipasopa/
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Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).