I'd say that "censorship" (things that could be classified or pattern-matched to this word) happens less than once in a year. That could actually contribute to why people speak so much about it; if it happened every day, it would be boring.
From my memory, this is "censored":
And the options 2 and 3 are just common sense, and could happen on any website. Thus, most talk about "censorship" on LW focuses on the option 1.
(By the way, if you learned about the "basilisk" on RationalWiki, here is a little thing I just noticed today: The RW article has a screenshot of dozens of deleted comments, which you will obviously associate with the incident. Please note that the "basilisk" incident happened in 2010, and the screenshot is from 2012. So this is not the censorship of the original debate. It is probably a censorship of some "why did you remove this comment two years ago? let's talk about it forever and ever" meta-threads that were quite frequent and IMHO quite annoying at some time.)
Also, when a comment or article is removed, at least the message about the removal stays there. There is no meta-censorship (trying to hide the fact that censorship happened). If you don't see messages about removed comments at some place, it means no comments were removed there.
There is no meta-censorship (trying to hide the fact that censorship happened).
And yet earlier in your post you're talking about some posts in 2012 about censorship in 2010 being deleted. Smells like meta-censorship to me.
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