The Guardian - Investigate your MP's Expenses

In June 2009 a scandal in Great Britain was uncovered by several Newpaper businesses upon discovering several documents of members of government and MP's expenses  being misused and costing tax payers tens of thousands of pounds for their leisurely items and hidden charges for unearned money.

Of course this encouraged an outraged and the general public demanded the publication of documents displaying the expenses and claims of MP's and officials.
But the government seemed to provided this information in the most unfortunate way possible, each of the documents were provided as scanned in images rather than the documentation files themselves, making them impossible to cross reference digitally for any abnormalities or inappropriate use of expenses.
Meaning that the process of going through the million of documents would be a long and arduous task.
Some dubbed this "ploy" as "BlackoutGate" and as "The biggest cover up to date".

The Guardian (One of the newspapers involved in exposing this scandal.) enlisted

the assistance of Simon Willison, an accomplished, London-Based Software

Developer who compiled all of the documents into an easily accessible database.

Following a set of rules and guidelines when going through and investigating these

documents had to be followed extensively to ensure no mistakes to be made and in

just 3 days 20,000 players had managed to analyse 170,000 documents affiliated

with this scandal.