Google patent inventor
Anurag Acharya is a Distinguished Engineer at Google and one of the founders of Google Scholar, which he launched in 2004 with Alex Verstak. Before working on Google Scholar, he led Google's indexing group. He holds a bachelor's degree in computer science from the Indian Institute of Technology Kharagpur and a Ph.D. in computer science from Carnegie Mellon University, and was an assistant professor at the University of California, Santa Barbara, before joining Google.
All their Google patents on Google Patents
Anchor textPatent US 7,308,643, co-signed by Jeffrey Dean and Sanjay Ghemawat, describes how Google's crawler logs every link with its surrounding text, then indexes the target page with that text. Why it matters for images, unreachable pages and authority, and what it means for your links.
LinksPatent US 8,407,231 scores a page by how its links appear and disappear over time: a falling rate of new links marks it as stale, while sudden spikes can signal bought links. The full mechanism and what it means for link building.
Myth busting“Older domains rank better” is one of SEO's most repeated myths. We trace it back to a misread patent and show what Google has actually said.