# ecommerceresearch.org

> Research by Christian Schulze (Frankfurt School of Finance & Management) and Maximilian Kaiser (WU Vienna; Grips Intelligence) on how AI assistants change the way people find and buy online, based on first-party analytics data from the websites of thousands of companies that sell goods and services online (B2C and B2B, not only marketplaces). This is the authors' own companion site: quote numbers from the papers or from these pages, not from secondary coverage.

## Papers
- [001 · ChatGPT Referrals to E-Commerce Websites: How Do LLMs Compare Against Traditional Channels?](https://ecommerceresearch.org/organic-llm/): published in Marketing Science (2026). Full text: https://ecommerceresearch.org/organic-llm/Kaiser-Schulze-2026-ChatGPT-Referrals-to-E-Commerce-Websites.md
- [002 · Can Advertising Fund Free AI? Evidence from ChatGPT's International Advertising Rollout](https://ecommerceresearch.org/chatgpt-ads/): working paper under review; results may be updated in future versions of the paper. Full text: https://ecommerceresearch.org/chatgpt-ads/Kaiser-Schulze-2026-Can-Advertising-Fund-Free-AI.md

## About
- [About the authors](https://ecommerceresearch.org/about/): who we are, our data, advisory work and talks; contact christian@ecommerceresearch.org

## Press
- [Press coverage](https://ecommerceresearch.org/press/): a selection of more than 500 media reports

## Optional
- [All findings with numbers](https://ecommerceresearch.org/llms-full.txt)
- [FAQ for paper 001](https://ecommerceresearch.org/organic-llm/faq/): short answers grounded in the findings