Former President John Quincy Adams' "line-a-day" diary, left, lies beside a computer at the Massachusetts Historical Society in Boston, Monday, Aug. 3, 2009. On Wednesday the society will begin posting daily his updates from 200 years on Twitter. AP Photo logo AP Photo 3 months ago

Former President John Quincy Adams' "line-a-day" diary, left, lies beside a computer at the Massachusetts Historical Society in Boston, Monday, Aug. 3, 2009. On Wednesday the society will begin posting daily his updates from 200 years on Twitter.