Degrees Kelvin has its place, just as leading zeros. The Farmer's Almanac may have a point but if they do I can't see it and to put a leading zero in front of a year is just annoying. Think about it: how would you pronounce the dates from now on, are you really going to say 'Today is the 7th of november of zero-two-zero-two-five'? And why stop at one zero, really forward thinking people should start counting from the big bang up, that's as close as you can get to the Kelvin analogy, might as well take it all the way then.