I think this is quite appropriate in many situations. Why?

- Unless it is during the first few weeks of April, I (and I imagine many others, too) pay no special attention to the exact date a news item or blog post was written (the year: yes, month: maybe, day: no). - Almost everything we write on the Internet is going to be archived for future generations to read.

If topics such as this become irrelevant/non-topical in 10-15 years time, someone coming across this article for research purposes may be drawn in by the ruse.

Just a thought.