The Open Net Initiative — a joint effort between the University of Toronto, the University of Cambridge, and several of us at the Berkman Center at HLS — today released a bulletin about the Internet content filtering practices in Iran.  “In total, we tested 1,076 unique web pages and were blocked at least once from accessing 439 of these pages (41%), with 425 pages (39%) inaccessible in the majority of tests.”  Our testing showed that many of these blocks fell in the pornography or politics content categories.  “Over 80% of the pages categorized as either sexual or political/religious/social within the blacklist were blocked during our testing, suggesting few situations where previously blocked pages were later made accessible in those particular categories.”  Please read the full bulletin for more detail.