So here’s The Guardian’s crowdsourcing tool for MPs’ expenses. If you’ve not already, you should have a play: it’s a dream. There are over 77,000 documents to get through - and in less than 24 hours users have gone through over 50,000 of those. You wonder how long it took The Telegraph to get that far.Meanwhile, that process is doing much more than just finding ’stories’. It’s generating data: the date, the amount, the type of expense, the type of document. When this stage is finished, The Guardian will have a database that will allow people to filter, mix and combine the expenses data in different ways.

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