By meta-censorship I meant things like removing the content from the website without a trace, so unless you look at the google cache, you have no idea that anything happened, and unless someone quickly makes a backup, you have no proof that it happened.

Leaving the notices "this comment was removed" on the page is precisely what allowed RW to make a nice screenshot about LW censorship. LW itself provided evidence that some comments were deleted. Providing a hyperlink instead of screenshot would probably give the same information.

Also, I am mentioning basilisk now, and I have above 95% confidence that this comment will not be deleted. (One of the reasons is that it doesn't get into details; it doesn't try to restart the whole debate. Another reason is that don't start a new thread.)