Twitter Archive to be in Library of Congress

It is great to know that the last tweets of (possibly slain?) Iranian democracy supporter, Persian Kiwi, will be archived for posterity in the Library of Congress.  The millions of others?  We will see... "ALL public tweets, ever, since March 2006!" will be archived in the Library of Congress, according to: 
http://twitter.com/librarycongress. 


BCC reports that, "Alongside the Library of Congress announcement, Google revealed how it is going to make the Twitter archive searchable for users. The search giant unveiled a replay feature that lets users search tweets posted at any given point in time right down to the minute."