I get a "Page not found" message for that link, Dave.
Matt, "The emperors return" could mean one of two things, i.e.: "The return of the emperors", in which case an apostrophe is needed - "The emperors' return"; or "The emperors are returning", in which case an apostrophe would be incorrect.
It goes to show that apostrophes are important in conveying meaning.
(And before anyone suggests "The emperor's return", let me confirm that I saw the programme too and that considerably more than one emperor penguin was shown in it.)
It seems very few do. I check it once or twice a week and it's rare to find a new post. I suspect that JR's earlier insistence on keeping discussion exclusively to the apostrophe -- against all sensible considerations, suggestions from participants and also from John Hale (admin) -- proved less than wise. What was once a lively forum has almost died, while here we are alive and well. Paul's experiment (this forum) has proven successful.
"Style is knowing who you are, what you want to say, and not giving a damn." — Gore Vidal
I stopped going there when JR recanted and allowed non-apostrophe related discussion. It was quite clear that he realised that his earlier decision had driven many of his regulars to this site, and his reversal was a blatant attempt to stifle us at birth.
"In considering the use of grammar as a corrective of what are called ‘ungrammatical’ expressions, it must be borne in mind that the rules of grammar have no value except as statements of facts: whatever is in general use in a language is for that very reason grammatically correct."
[Henry Sweet, 1891.]