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To revisit one's past postings on online web message forums, and retroactively delete the text, replacing it with minimally requisite text allowed by the forum's software, such as "...".

One purpose of milzing one's past postings is to erase evidence of such postings, so as to remove the ability of others to quote you.

"Your statements on pornography are completely at odds with what you said earlier - unfortunately you milzed your posts from that discussion, so I (conveniently for you) can't quote you on those."
by C. Sandwich May 22, 2006
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wow! she is so a milz!
by friend November 01, 2003
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