# Find out what actually sells

Source: https://databull.app/guides
Updated: 2026-10-29 · Author: Ahmed Gagan (maker of DataBull)

> Short, practical guides to tracing each sale back to the post, link or search that brought the buyer. With or without DataBull.

Each guide answers one question with the steps to do it yourself: what Stripe stores, what a referrer can and can't tell you, which tags to add to a link. At the end of each one is how DataBull does the same thing for you, in case you'd rather not maintain it.

## Guides

- [How to track ChatGPT traffic](https://databull.app/track-chatgpt-traffic): The chatgpt.com referrer, the UTM tag, GA4 setup, and what gets lost.
- [Tracking Perplexity traffic](https://databull.app/perplexity-traffic): The perplexity.ai referrer, its two bots, and revenue per visit.