Dynamic time decay

When For You started I didn't have a way to tell which posts the user has seen. When the user refreshed the feed - they would get the same ranking of results. To make it feel more dynamic I added an exponential time decay with a half-life of 6 hours. View post on Bluesky It means that the score of an item gets reduced by 50% when the age of the item reaches 6 hours, -75% by 12 hours, -87.75% by 24…