Tiananmen Square incident in 1989: it is referenced both by the full name, "Tiananmen massacre," the Chinese custom of referencing important events by the number of the month and the day (in this case, 6-4), and also by reference to people involved — a mother of one of the victims who has been campaigning for human rights.
The name of Zhao Ziyang, former Chinese Communist Party (CCP) general, is also included in this category.
Chinese communist leaders: a list of the top leaders, past and present, are included along with a particularly creative rewriting of Jiang Zemin by replacing one of the characters of his name by the character for "thief."
Falun Gong: a list of different names for Falun Gong including various spellings with characters that sound the same, often used to circumvent filtering.
Sensitive words: a list of words referring to uprisings or suppression.
....The filtering system is not designed to be foolproof. The filtering mechanism on all three blog providers we tested can be circumvented by adding characters, such as dashes, to split up the filtered keywords. For example, all three blog providers filter the Chinese characters for six/four ("六四"), which is short for June 4, 1989 — the date of the Tiananmen Square massacre. However, if users include a dash, "六-四", the blog post will not be filtered.
I would say this is a losing battle for the Chinese government, perhaps tacitly acknowledged by the looseness of the filtering. The economic prosperity the government is fostering with capitalistic policies is the very engine that will ultimately destroy that same government's ability to control interpersonal and even mass communication, for the Internet is both.
Article comments
1 - RJ
China might well dominate this planet in 50 years, but it won't be with pinkos running the country.
Freedom rules! :)
2 - Exploratoria
Fortunately, most of what is worth reading online is non-political and therefore not really subject to censorship.