请问HN：有没有人知道那个使用明信片的chan风格网站？
标题基本上是 - 我模糊记得曾经遇到过一个类似于论坛的网站，在那里必须实际寄送明信片才能发帖。还有其他人记得这个吗？有人有链接吗？
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Title essentially - I have a vague memory of coming across a chan-style website where one had to physically send in a postcard in order to post. Does anyone else remember this? Does anyone have the link?