Wow... lots of quotes. Let's discuss.
Don't include. Rich explicitly said he would post when the cameo occured, so this post adds nothing to the status quo.
Consider including. It could come up again.
Include. No question.
Don't include. This is one of those issues that comes up when the comic first comes out and never surfaces again.
Don't include. Why would -anyone- want to discuss that EVER?
Include.
And one of my own!
GIF format is used to due technical limitations present when the comic launched.
I am leaning towards not including this because, again, it has little to nothing to do with the strip or characters and is more just trivia, which isn't the purpose of the Index.
The giant re-interating the difficulties with the murkiness inherent to the alignment system.
I'd say include this one... it does contain some caveats about what Rich's intentions are when he declares a character to be X alignment.