Nice find. We'll have around 14 months of Intporn indexed so can easily track every change to the site over that period, producing screenshots of particular time periods as needed.
Interestingly User account number 3 has gone through some changes in the past hour.
First there was this:
Then an account name change and lots of deletions leaving three videos
Now there's this:
However much pirated content still remains - so we'll have to do something about that.