Vandalism is a major issue on open source, collaborated projects such as Wikipedia, as the content is open to be manipulated or destroyed by vandals (Kleeman, 2007). As stated in the Wikipedia entry “Researching with Wikipedia”, “Wikipedia's radical openness means that any given article may be, at any given moment, in a bad state: for example, it could be in the middle of a large edit or it could have been recently vandalized… Wikipedia is certainly more subject to subtle vandalism than a typical reference work” (Wikipedia:Researching with Wikipedia). In “Taiwan independence”, the article has previously been vandalised many times. Severely, the page was vandalised on 22nd of May 2004, where all the content on “Taiwan independence” was replaced by rude, aggressive language irrelevant to the issue (http://en.wikipedia.org/w/index.php?title=Taiwan_independence&oldid=3693499). This type of vandalism happened again on several other occasions where arguably people opposing to the movement have replaced the article’s contents with false, rude and hurtful comments towards Taiwanese (http://en.wikipedia.org/w/index.php?title=Taiwan_independence&oldid=7530207).