Follower count is the number of accounts subscribed to a profile's posts. How platforms calculate the figure, where it gates access, and why buyers discount it.

Master services agreement: the umbrella contract governing advertiser, agency and vendor relationships. What it contains, who audits it, and where it breaks.

German buyers can now push best for planning survey segments into Hawk as map polygons averaging 500 households. Whether rivals match the grid remains open.

Nineteen languages and five Footballco titles sit inside a renewal begun in 2023, and header bidding now runs beside Feed. What does the pairing pay publishers?

Header bidding lets publishers offer one impression to several exchanges at once, before the ad server decides. Its mechanics, origins, numbers and disputes.

Ex-TAC gross profit is revenue less payments to publishers, the non-GAAP measure ad tech companies report in place of gross profit. How it is built, and why.

A supply path is the route a bid request takes from an ad slot to a buying platform. How the intermediaries are recorded, what hops cost and why routes differ.

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.