Bringing Clarity to Complex Internet Disputes
Internet, SEO, and digital marketing disputes almost always turn on technical facts that are not obvious on the surface: why a website's rankings changed, whether a domain transfer was authorized, whether an advertising account was managed competently, or how a false statement actually spread and was perceived online. Bill Hartzer's role as an expert witness is to help courts understand how search engines, domain systems, social media, and advertising platforms actually behave, and how that behavior connects to the facts of a specific case.
Every engagement is grounded in verifiable data, reproducible analysis, and explanations suitable for deposition and trial. Bill has been qualified as an expert witness in matters involving SEO performance, domain ownership, online defamation, digital advertising conduct, and analytics data, and he is frequently retained to analyze complex digital evidence and explain, in plain language, what actually happened online.
Four Areas of Focused Expertise
How Law Firms Use Trial Witness
Attorneys rely on Bill when they need a practitioner with genuine, current, hands-on digital experience rather than someone offering secondhand theory. He has built and optimized websites, managed domain portfolios, run pay-per-click (PPC) campaigns, and performed forensic investigations into click fraud, analytics irregularities, online reputation issues, and domain theft. Because of that background, he can bridge the gap between raw technical data and business impact in language that is clear to judges, juries, and opposing counsel without a technical background.
Representative work includes evaluating SEO campaigns and allegations of SEO fraud or malpractice, reviewing WHOIS, DNS, and registrar logs in domain name and domain theft disputes, analyzing search results, reviews, videos, and social media in online defamation cases, and auditing PPC accounts and analytics evidence in digital marketing and advertising disputes. Expert witness services typically include reviewing case materials and digital evidence, preparing written expert reports and declarations, providing deposition and live trial testimony, and analyzing search visibility timelines and ranking patterns using structured forensic workflows.
Founder of Hartzer Consulting Since 1996
Bill is the founder of Hartzer Consulting, providing digital marketing services since 1996, and a recognized SEO thought leader who has spoken at national and international marketing conferences and served as a brand ambassador for Majestic.com and OnCrawl. He has consulted on thousands of SEO and domain-related projects, and has served as an expert witness in matters involving keyword advertising, brand protection, online identity theft, and deceptive marketing practices. He has been deposed and testified in court, and understands what it takes for an expert report to hold up under cross-examination and meet Daubert standards.
Discuss a Matter Involving Internet, SEO, or Digital Marketing
Disputes involving search visibility, domain ownership, digital ads, analytics data, and online reputation often depend on technical details that are not obvious on the surface. Bill reviews the underlying evidence and explains the findings in clear, courtroom-ready language, for both plaintiffs and defendants.