Since potential students and colleagues will probably want to see his publications, Dan has subscribed to both ResearchGate and GoogleScholar. The ResearchGate website provides free PDFs of publications, along with citation counts that are so inaccurate that one wonders why they bother trying. By contrast, the Google-scholar website provides citation counts that seem more reasonable, but only publisher links to the papers, which means that readers will need to be at an institution that subscribes to the journals in which he has published.