Do you know which bots your CDN is blocking? Robots.txt is voluntary, and real enforcement may be happening without your SEO team knowing.

Public figure impersonation is an ad that poses as, or falsely implies backing from, a famous person to get money or data. Google suspends it without warning.

Celeb-bait is scam advertising that uses fake celebrity endorsements, often deepfakes, to push users to fraud sites. Platforms now fight it with face matching.

A chargeback is a forced reversal of a card payment, ordered by the cardholder's bank under network rules. Here is how disputes work, who pays and why fraud abuses it.

Disgorgement is a legal remedy forcing a wrongdoer to give up net profits from unlawful conduct, used by the SEC, courts and competition regulators in Europe.

Commitment procedure: the EU antitrust route in which a company under investigation offers binding remedies and the case closes with no fine or breach finding.

Featured Offer (Buy Box) is the Amazon offer the Add to Cart button buys from, chosen by algorithm among sellers of one product on price, delivery and service.

Signal loss is the shrinking supply of user-level data, such as cookies, device IDs and click IDs, that ad systems use to target and measure. Causes, disputes.

GCLID is the Google Click Identifier, a unique URL parameter Google Ads appends to each ad click so conversions and offline sales can be tied to that click.

A paywall is a barrier that withholds digital content until a reader pays, usually by subscription. Hard, metered, freemium and dynamic versions all differ.

A core update is a broad change Google makes to its search ranking systems several times a year, reshuffling which pages rank without penalising a single site.

Referrer policy is the browser rule deciding how much of a page's URL is sent in the Referer header, shaping attribution, privacy leaks and ad tech page data.

A referrer is the address of the page a visitor came from, which browsers pass in the HTTP Referer header and analytics tools read to label each traffic source.

DVA+ is Amazon's AI-led campaign type merging display, video and audio buying from Amazon DSP, Sponsored Display and Sponsored TV into one objective and budget.

Amazon DSP is Amazon's demand-side platform for programmatic display, video and audio buying on Amazon and third-party sites, apps and TV, renamed DVA in 2026.

A Google Search help page lists the referrer values Search traffic sends, why some visits arrive with none, and why counts differ from Search Console.