Revenue per session is total revenue divided by visits, the yield metric that prices a reader rather than an ad slot. Formulas, history, limits and disputes.

Geomarketing is the use of spatial data to plan and target marketing, tying company records to map units. How the grids, catchments and bid geography work.

microm is the German geomarketing company whose proprietary PLZ-8 grid splits the country into about 83,000 cells of 500 households for cookie-free targeting.

Radius targeting draws a circle around a point and serves ads only inside it. How the shape is defined, which signals place a device, and where it breaks down.

A polygon is the closed map shape that sets a targeting or measurement boundary in advertising. How the outlines get drawn, matched to a device and regulated.

IP geolocation infers where a device sits from its internet address. How the databases are built, where the estimate enters a bid request, and why it fails.

Ninth Circuit ruled the user, not Perplexity, accesses a site through an AI agent. Retailers and publishers now face agent traffic no statute lets them bar.

Channel 4 takes the heaviest hit at 20% and ITV 12%, on cumulative losses of GBP 3.5bn to 2036. Only 15p of every pound leaving linear returns to broadcasters.

Listed events regime: broadcasting rules reserving major sporting fixtures for free coverage. How Group A and B work, who counts as free, what changes in 2027.

Decremental margin is the profit lost per unit of revenue lost, the ratio analysts use to judge how far advertising earnings fall when client spending drops.

Preliminary injunction: a court order halting conduct while a case is decided, granted on four factors and now shaping ad tech, AI agent and platform fights.

A retail media network is the advertising business a retailer runs on its own shop and shopper data. How the inventory, auctions and measurement actually work.

Automattic confirms Matt Mullenweg is back in charge. Questions remain about what exactly happened and who wrote the confirmation.

Sixteen terms in four groups of four, pulled from corners of the job that rarely share a meeting. Two of these groups look more alike than they are.

Ninth Circuit vacated Amazon's injunction against Perplexity's Comet agent, ruling the user does the accessing, as Google starts paying publishers per AI use.

Agencies can downgrade 25% of eligible listings from 1 January 2027; sponsorship money no longer buys tier commitments. Rivals get a listing-by-listing shot.

ACCC is Australia's competition and consumer regulator, the agency behind the ad tech inquiry, the news bargaining code and Australian advertising enforcement.

A vertical listings portal is a single-category index of other people's inventory, sold back to the sellers. How its fees, its feeds and the search units work.

Google is testing a new ad format within AI Mode that appears directly between content — a design not previously documented among other recent AI Mode ad tests.

Learn how local marketers can connect AI discovery to leads using citations, call attribution, prompt libraries, and customer conversation data today.

Google appears to have briefly tested letting users hide sponsored results within the Shopping tab, a feature previously limited to the main search results tab.