Interesting post, Tom, ta.
About tactics for dealing with takedowns, though - the post you linked to suggested linking to the taken down material elsewhere on the web, but it's worth bearing in mind that in fact it can be just as risky linking to something as including it in full on your own blog or site.
An expert in tech law helpfully explained issues like this in a talk I went to and he confirmed the accuracy of my detailed summary of legal risks for bloggers under UK law - on linking in particular, see item 12 of the dos & don'ts in that post.
