The people at "Twenty Not Two Thousand" are worried that because people said "two thousand and nine," this habit may carry over for the present year.
Don't let it happen! It's easily the most inefficient way to say the name of the year.
Say the year "1810" out loud. Now say the year "1999" out loud. See a pattern? It's been easier, faster, and shorter to say years this way for every decade (except for the one that just ended) instead of saying the number the long way. However, many people are carrying the way they said years from last decade over to this decade as a bad habit. If we don't fix this now, we'll be stuck saying years the long way for the next 89 years. Don't let that happen!
Link - via mentalfloss
From the Upcoming ueue, submitted by nmiller.
1001=ten oh one
1002=ten oh two
1010=ten ten
1066=ten sixty-six (Battle of Hastings)
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1492=fourteen ninety-two (the genocide of the indigenous peoples of North and South America begins)
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1700=seventeen hundred
1701=seventeen oh one
1776=seventeen seventy-six (Declaration of Independence)
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1800=eighteen hundred
1801=eighteen oh one
1898=eighteen ninety eight (Spanish-American War)
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1900=nineteen hundred
1901=nineteen oh one (In poesy, nineteen aught and one)
1910=nineteen ten
1929=nineteen twenty-nine (stock market crash and start of the Great Depression)
1942=nineteen forty-two (Pearl Harbor attacked)
1943=nineteen forty-three (the year of my nativity)
1999=nineteen ninety-nine (the last four-digit year in the Gregorian calendar that started with the numeral one)
2000=tweny hundred (Do YOU pronounce the letter “t” in the word “twenty” when used in a compound number like 25? Tweny-five.)
2001=tweny oh one (What does Hollywood know? Two thousand and one: A Space Odyssey. Bah humbug!)
2002=tweny oh two
2003=tweny oh three
2004=tweny oh four
2005=tweny oh five
2006=tweny oh six
2007=tweny oh seven
2008=tweny oh eight
2009=tweny oh nine
2010=tweny ten (the year Jesus Christ celebrates the two thousand tenth anniversary of his nativity)
2012=tweny twelve (last year in the Mayan long-count calendar)
2036=tweny thirty-six (Soc Sec pays out more than it takes in and starts to go broke)
'Nuf said.
For the coming years, though, I've been calling them 'twenty-something'. I don't know, it just sounds better. I tried calling them 'two-thousand-something' or even just by their last two digits, but it didn't sound as natural for some reasons (IMO). I bet you though that by 2060s or 2070s, people will forget that we have this conversation at all, and call years in the 21st century only by their last 2 digits.