Instagram is Meta's photo and video app and, for advertisers, a set of placements inside Meta's single ad auction. How the buying, formats and rules now work.

Sites must register and accept a policy capping use to trust, rate limiting and invalid traffic detection. Trial spans Chrome 154 to 165. What happens next?

Cardinality is the number of distinct values in a set or column, deciding what ad reports can show, what reach costs to compute and where privacy floors apply.

A scorecard is a fixed, weighted criteria set applied repeatedly so results compare. How marketing scorecards are built, where they began, and how they fail.

eTLD+1 is the registrable domain that browsers and ad systems treat as one site. How the Public Suffix List defines it, and where the boundary is enforced.

Web Bot Auth lets bots sign each HTTP request with a private key so sites verify identity instead of trusting headers. Mechanics, history, adoption, disputes.

Unlinkability is the inability to tell whether two records describe the same person. How ad systems build the property, who now tests for it, where it breaks.

Advertisers also face bans on synthetic media misrepresentation and fake shopfronts from 12 November. Updated Ad Data Terms now cover connected TV and offsite.

Alphonso received city, zip, coordinates and nearest major road from a set used as a monitor. A lawyer says LG keeps the right to sell what the screen shows.

Script lift measures the prescription volume that an advertising campaign produced, comparing exposed prescribers or patients against a matched control group.

HDMI-CEC is the control bus inside every HDMI cable, able to report whether a television is powered on. How the protocol works and why measurement ignores it.

BSSID is the 48-bit hardware address that identifies a Wi-Fi access point. How router identifiers become precise location data, and why regulators now say so.

Man-in-the-middle is a third party secretly relaying or altering traffic between two endpoints. How the position is taken, and what advertising did about it.

Binary options are all-or-nothing derivatives paying a fixed sum or zero, banned for retail buyers across Europe and off-limits across the major ad platforms.

Lead ads carry a pre-filled form inside the ad unit, capturing contact details without a landing page. Mechanics, delivery, history and the quality dispute.

Sixteen terms, four groups of four. The awkward part is not the jargon: it is the handful of tiles that read as plain English right up until they do not.

LG televisions mapped 38 devices on one test network and send about 4GB of content recognition data a month, as California starts fining platforms per child.

Taxonomy is a fixed list of categories with stable IDs letting advertising systems describe content, audiences and products identically. How the lists work.

Sentiment is the positive, negative or neutral tone that software assigns to content about a subject. How advertising scores it, trades it, and gets it wrong.

Semantic means processing content by meaning rather than by matching strings. How it works in ad targeting, search ranking and page markup, and where it fails.