> ## Documentation Index
> Fetch the complete documentation index at: https://docs.firstpromoter.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Concepts & Key Terminologies

> List of concepts and key terminologies used in the documentation

## Promoter

Promoters/Affiliates are individuals or companies who drive traffic to a company’s website, products, or services through referral links and earn a commission when that traffic converts.

## Clicks

Clicks are the number of unique visits to your website via the referral link. **NB:** The user's first click on your website via the referral link is what is counted.

## Referral

A referral is an individual or business that signs up for or purchases a service using a referral link. A referral can either be a lead or a customer.

## Lead

A lead is an individual or business that signs up on your website using a referral link but hasn't purchased from your website.

## Customer

A customer is an individual or business that signed up on your website using a referral link and has made at least one purchase from your website.

## Sale

A sale occurs when a customer makes a purchase using a referral link. We generate rewards or commissions only for sales.

## Referral Tracking

This refers to when the referral details (email address/UID) are sent to FirstPromoter from your website after they sign up or fill out a form. This can be done using the referral tracking script or API.

## Sale Tracking

This refers to when payments are tracked from your billing provider, allowing commissions to be generated for your affiliates.

## ref\_id

This is the referral id/token assigned to an affiliate/promoter once they signup or are added to a campaign. It is generated by FirstPromoter by default and can be set using our API as well. If a referral link is used it is set as a cookie `_fprom_ref` in your browser

## tid

This is a tracking ID that is dynamically generated by FirstPromoter when someone visits a referral link. This ID is set as a cookie called `_fprom_tid` in your browser.