Dan Cristian Alexandrescu
Founder of Websem · AEO/GEO research
Dan Cristian Alexandrescu runs Websem, the agency he founded in 2013 and has operated through Supremium Genesis S.R.L. since 2017. He entered digital marketing in 2010 as a freelancer, then as a developer, before building his own firm.
Since 2024 he has worked on generative engine optimisation — AEO and GEO — and on measuring traffic arriving from AI assistants. He publishes original research on how language models recommend Romanian brands, releasing open datasets on Zenodo, Kaggle and Hugging Face, and leads aeo-geo.ro, a research project offering free tooling and a Romanian-language AEO glossary.
He holds a master's degree in community justice administration from the University of Bucharest.
ORCID 0009-0007-1994-6700 · Updated 2026-08-25
What I work on
He has worked on generative engine optimisation since 2024, with results documented publicly from June 2025 — among the first material on the subject published in Romanian.
The work splits three ways: measuring what generative engines actually answer about a market, building the sites they can extract and cite, and publishing the protocol so the figures can be reproduced or disputed by someone else. That last part is the one that matters: a figure without a published method is a claim, not a measurement.
Research and publications
- Episode 4 · How many Romanian sites publish llms.txt — and does it matter?64% publish llms.txt, so it is already the dominant practice — yet the most-cited domain carries a plugin-generated file with none of the summary line the specification asks for.Dataset · DOI 10.5281/zenodo.21861573 ↗
- Episode 3 · Who sells the laptop when the customer asks an AI?86 of 87 answers name a major retailer, so this market is decided by position rather than presence: eMAG takes first place in 66 of its 82 mentions.Dataset · DOI 10.5281/zenodo.21821185 ↗
- Episode 2 · Who sells the book when the customer asks an AI?58% of answers name no major brand at all, and some brands are cited as sources without ever being named — Librarul: 14 citations, a single mention.Dataset · DOI 10.5281/zenodo.21736211 ↗
- Episode 1 · The AI visibility of Romania's luxury jewelryAverage pairwise agreement between models is 18%, and no brand appears in all ten lists.Dataset · DOI 10.5281/zenodo.21724399 ↗
Career
- 2007–2010
- Master's degree in community justice administration, University of Bucharest.
- 2010
- Enters digital marketing as a freelancer, then as a developer.
- 2013
- Founds Websem.
- 2017
- Incorporates Supremium Genesis S.R.L., the entity operating the agency.
- 2024
- First publicly documented experiments with AI-assisted SEO strategies.
- 2025
- Work on traffic arriving from language models; participation in the Tekpon Awards. Evidence ↗
- 2025–2026
- Publishes original AI-visibility studies on Romanian markets, with the raw data open and deposited under DOIs.
- 2025–2026
- Launches aeo-geo.ro — a free AEO/GEO scanner, guide and Romanian-language glossary. Evidence ↗
Where to find me
Research and code
- ORCID ↗Persistent researcher identifier
- Zenodo ↗The studies' datasets, with DOIs
- Kaggle ↗The same data, for reuse
- Hugging Face ↗Public datasets
- GitHub ↗The collection and derivation scripts
- aeo-geo.ro ↗Research project: free AEO scanner and a Romanian glossary
Social
- LinkedIn ↗Personal profile
- YouTube ↗The AEO/GEO project channel
- Instagram ↗Personal profile
Contact
For projects, joint research, or a correction to one of the studies.