Warmist David Karoly doesn't reply to McIntyre, but does put up a comment on Skeptical Science: When he wrote "I have just received a threat of legal action", he just *assumed* that McIntyre was threatening legal action

What is the Climate Science Legal Defense Fund?

[comment by warmist David Karoly] I have not replied to him...McIntyre’s email to me did not mention legal action. However, a first part of legal action on defamation in Australia is often to send a request to the author of the material, requesting that they withdraw it and apologise. Hence, I felt that it was a reasonable assumption that McIntyre was starting a course of legal action.

Another Untrue Allegation by Karoly « Climate Audit

[Karoly] In Australia, I have just received a threat of legal action from Steve McIntyre in Canada

Twitter / MichaelEMann: Stephen McIntyre fabricate ...

Stephen McIntyre fabricates claim that David Karoly ‪#HSCW‬ book review was taken down (it was moved behind paywall!) http://bit.ly/M96WTa