网络观察基金会与维基百科
参考资料

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↑  Investigation by several UK based Wikipedians revealed that the page/image was still available using direct addressing URL parameters, or by using the Wikipedia secure server, as detailed in an internal discussion（網頁存檔） of the issue at the Administrator's Noticeboard at the time
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↑  Jennifer LeClaire. . Yahoo News. 2008-12-08<!- – 4:48 pm ET -->  [2013-06-05]. （原始内容存档于2016-03-04）. On its Web site, Wikipedia said several large ISPs that cooperate with the IWF subsequently blocked the image, affecting an estimated 95 percent of residential Internet users in the UK ... ". Due to the way the block was created (via transparent proxies), users from the affected ISPs now share a small number of IP addresses. This means that a user committing vandalism cannot be distinguished from all the other people on the same ISP," Wikipedia said ... ". Unfortunately, the effect of this is that all users from the affected ISPs are temporarily blocked from editing Wikipedia. Simply viewing the site is not affected, aside from the blocked article and image."  请检查|date=中的日期值 (帮助)
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↑  Arthur, Charles. . The Guardian (UK). 2008-12-09  [2013-06-05]. （原始内容存档于2012-11-14）. : "However Amazon US no longer risks being blocked under IWF's rulings. The image, as an album cover, had been on its site earlier this week, but has now been removed, apparently on the site's own initiative."
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