The bureau has one address, checked twice a week. It is answered by the person who writes the audits, which is why the answers are slower and more specific than they would be from a press office.
Every audit on this site rests on numbers that were measured by hand: hours to the credits, hours to the point of abandonment, minutes lost re-learning a control scheme after three weeks away. Numbers taken by hand are wrong sometimes, and a reader who has re-run one and got a materially different figure is doing the most valuable thing a reader can do.
Send the figure and the conditions — difficulty setting, whether side content was pursued, and roughly how long the gap before returning was. Conditions matter more than the number itself. Two honest measurements of the same game can differ by six hours because one player read a wiki and the other did not, and that is not a correction to anything.
Several of the patterns described in the ledger notes came out of reader mail rather than out of the bureau's own play. If you keep a record of what you own against what you have finished — even a spreadsheet with three columns — it is genuinely interesting, and it occasionally becomes a paragraph in a later note with your permission and without your name unless you want it there.
Requests to audit a game supplied for free are declined, because the entire premise of the method is that every game here was bought with money by someone who then had to decide whether to finish it. A free copy removes the sunk cost that this publication exists to measure, which makes it worthless for the purpose.
Also not answered: offers of paid placement, guest articles, affiliate arrangements, or link exchanges. There is nothing to buy on this site and nothing for sale in it.
Corrections: a few days. Everything else: sometimes a fortnight, sometimes never, and there is no ranking of readers implied by which happens. The mail is read in full even when it goes unanswered, and it does affect what gets audited next more often than the silence suggests.
It sits in a mail client until the thread is finished and is then deleted along with the thread. It is not added to a list, not shared, not exported, and not connected to anything you read here, which is straightforward given that this site runs no analytics at all — see the privacy page for how that is verifiable rather than merely claimed.