# What a visit to this log leaves behind Updated: 24 September 2026 — Session Log staff Reading these pages leaves two traces and no others: a line in the web server's access log, and, if you write to the desk, a message in one mailbox. This entry says what is in each of them, how long it stays and who else gets to see it. The answer to the last one is nobody. ## Read alongside this - [About this desk](https://coinlen.com/about) — who keeps the log, how each figure is made, and who pays for the publication - [Terms](https://coinlen.com/terms) — what the research covers, and the limits it is read under ## What a request leaves in the log One line goes into the server's access log for every request, and it carries seven things: when the request arrived, which page it asked for, the status code it got back, how many bytes went out, the IP address behind it, the browser or crawler string it announced itself with, and, when the browser volunteers it, whichever page pointed here. A crawler gets no separate treatment: the same seven fields are written for a bot as for a person, into the one file. That log does three small jobs — keeping the site answering, showing up abuse, and telling us which crawlers have been through — and it is opened for nothing else. A line older than 21 days is gone: the log turns over and the old file is removed rather than archived. No line in it is used to recognise anyone on a later visit, none is joined to anything held elsewhere, and none is sold, rented or handed to an advertiser. ## What these pages do not run Every page here is built before it is asked for and sent finished. Nothing is assembled in the browser, nothing here calls home, and no cookie is set or read. There is no measurement script, no tag manager, no advertising code, no pixel and no advertising identifier anywhere on this domain. Type, stylesheet and the drawn figures are files served from this domain, so opening a page asks nothing of any other server and tells no third party you were here. This domain also sits in no measurement or advertising account that covers anything else, so there is nothing to stitch a visit here onto a visit somewhere else. ## What happens to a message editorial@coinlen.com is the only address this site publishes and the only mailbox it reads. A message sent there is used to answer you and, where it corrects a figure, to reprint the entry that carried it. It goes on no mailing list, because there is no mailing list, and it is answered by the people who write the pages rather than by anybody else. Correspondence about a correction is kept for twelve months, since a figure questioned once is usually questioned again, and is then deleted along with the address it arrived from. Write from that same address if you want to know what is still on file, or to have it cleared early, and it is cleared. When this entry itself changes it is reprinted under the day it changed, and nothing else moves that date. ## What never leaves this site Nothing about a reader is sold, rented, swapped or passed on to anyone, and that includes whoever paid to publish here. The hosting provider is the one unavoidable exception: the machine that answers these requests is the machine that writes the log described above, and it is used to serve this site and for nothing else. The other way out is a link. Source links on these pages are plain addresses with no tracking parameters attached to them, and once one is followed you are on that venue's site, under its policy and its cookies, not under this one. Corrections: editorial@coinlen.com. Session Log staff, 24 September 2026 This site is paid placement.