- What it is
- A short written note naming the address that responded for you, plus the date it did and roughly what you were doing.
- How you get one
- You write it at the time, while it is still true, rather than reconstructing it from memory a fortnight later.
- Where to keep it
- Apart from the published list, so a personal observation can never be mistaken for something a site announced.
- How it goes wrong
- Time passes and the note keeps its confident tone, so an old success reads exactly like a current one.
- What fails without it
- When several addresses are in front of you, nothing distinguishes the one with a track record from the rest.
- Time to acquire
- Under a minute if you write it while it happens, and impossible afterwards if you did not.
Published is a claim, worked is a memory
These two things get flattened together constantly, and the flattening is the whole reason this entry exists. An address appearing on a page means somebody put it there. An address answering when you used it means something happened on your machine, at a time you can name, with an outcome you observed.
The second kind of knowledge is weaker in one respect and stronger in another. Weaker because it is a single data point about a single moment. Stronger because it is yours and nobody edited it. Treat it accordingly, and above all do not let it drift back into the file described on the address file page, where it would sit looking like everything else.
Keeping the two apart
Physically apart is best. Different file, different page of the notebook, different sheet. The reason is that a mixed list rots into one undifferentiated list within about two revisions, and the moment that happens you have lost the only distinction that was worth recording.
If they must live in the same place, put a wide gap and a heading between them, and write the heading in words rather than a symbol. The label needs to survive being read at one in the morning by someone who is not paying attention, which is exactly when it will be read.
Writing it while it is still true
The note has to be made in the moment. Ten minutes afterwards you will remember that it worked and you will already be fuzzy about which of the three you used, because they are visually similar by design and the human eye gives up quickly. Two days afterwards you will confidently write down the wrong one.
Keep the entry short. The address, the date, and half a line of context saying what you were doing. Context matters more than it looks: an address that answered while you were browsing is not quite the same observation as one that carried you through a full session, and future you will want to know which it was.
When your own copy expires
It has no fixed shelf life, which is inconvenient. What it has instead is a decay you can reason about. A note from yesterday is close to a statement about today. A note from three months ago is a statement about three months ago and nothing more, though it still beats a line with no history at all.
The honest handling is to keep the date visible and let the date do the arguing. Do not upgrade the note. Do not quietly rewrite the date because the address is still on the published list, because that converts your one piece of first-hand evidence into a guess wearing a timestamp.
The order it buys you
The practical payoff is small and real. Facing several addresses with limited patience, you have a defensible reason to try one first rather than picking by position on the page. That saves attempts, and attempts are where mistakes live.
It also feeds the later stages. A note like this is the raw material for an order record, and it pairs naturally with the spare address entry, which deals with what you reach for when the one you know goes quiet. Both of those assume you wrote something down at the time. This is the entry where that habit becomes an object.
Questions that come up
Is this the same as a bookmark?
A bookmark records a destination. This records an event. The difference shows up the moment either of them is wrong, because a bookmark gives you no way to work out when it stopped being right, while a dated note tells you exactly how old your evidence is and lets you decide whether to believe it. The note also survives a browser profile being wiped, which bookmarks do not.
What if it stops answering?
Then you have learned something worth writing down, and the honest move is to record that too rather than deleting the line. A note saying an address answered in one month and did not in the next is a more useful artifact than a blank page, because it gives you a shape over time instead of a single point. Nothing on this site can tell you why the change happened.