Virtual breadcrumbs from the night before.
That’s how I remember what threads I posted in the next morning if I was drinking & smoking the night before. I do that now because there’s been times I’ve emailed someone offering to buy something they were selling and totally forgot about it. I count my lucky stars when I get a reply that it was already sod.
Now I can click on the link for the topics I posted in and wonder why the hell I was posting in the Mary Shelley’s Frankenstein thread.