Below I've linked to a fascinating application of the increase and accessibility of information to history. This project undertaken by James Bridle turns all the Wikipedia entries and edits about the Iraq war into a bound multi-volume set. The project highlights the ability to observe how information evolves into knowledge, how different positions become codified, and what aspects we disagree upon.
This use of Wikipedia is the tip of the iceberg as far as historians are concerned. Widescale, personal autobiography that is internetworked and searchable, like Ibiograph, over the long term offers another rich vein of information for future historians to analyze and make sense of.