Incidentally...
If you haven't noticed this phenomenon before, this is an example of the famous HZ "dredged post," where somebody out there, for some unknown reason, tags a post onto an ancient thread that has long vanished from the ken of all save Google. The system automatically pops the thread out of the archives into the "current" category, despite being a year old.
These involuntary "blasts from the past" are interesting sometimes, and can catch people unawares if they don't check the dates.