The year tag is also very useful for when you might have read it the first time, and want to know that it hasn't changed, or if you don't need/want to re-read i

The year tag is also very useful for when you might have read it the first time, and want to know that it hasn't changed, or if you don't need/want to re-read it (while still participating in the discussion). It's also interesting to see how things have aged.