1Choose
Watch, like or skip each video.

Day 1 · Signal Trail
Open this link on a computer or a tablet to play. On a small tablet, turn it sideways.
Day 1 · Why is this post on top?
Help Camden see why his feed changes.
Choose what Camden does with each video and watch his next feed move. Then find out why one post lands on top.
Day 1 · The lesson and this game
Each action leaves a receipt. The app uses the receipts to sort Camden's next feed.
Watch, like or skip each video.

Posts move up or down as receipts come in.

Find out what put the top post there.
This made-up app uses a simple rule. Real apps use many more signals.