Physically this data might exist somewhere but the challenge is making it accessible to future historians.
"The average life of a web page, as best as we can tell, is about 100 days before it is either updated or disappears.
"We are grappling with digital migration as a means of preservation, rather than analogue, paper-based preservation. The Twitter archive ratchets up this activity enormously."
"a collection of 140-character pearls of wisdom from educators using the social networking service, Twitter.
From behaviour management to interaction with colleagues, you will find practical advice and ideas contributed by classroom practitioners!"
2009 by Doug Belshaw