From my point of view, you can't have Fuwa without derail. On that matter...
Was I called upon?
How dare you.
----
As for Batman, does the problem still persist if the post is put on the blog as an old post - as if it were there all along?
Just as I cannot see any justifiable reason to not have it there if it affected absolutely nothing in regards to blog users, by the same logic, I don't see any reason to put it there if it's possible to mimic or access the original outside of the blog.
It is not a new issue. Further discussion is not likely; one could say the proverbial horse has already perished. Meaning that this addition would only benefit the one in a million that will go snooping around the blog archives for no good reason and, apparently, sanahtlig.
Assuming it is possible to access/mimic the original completely through other means, that is.