Datum Review
Filed by Datum Review
-
What delay costs co-founders
A row-by-row test for co-founders: settle exit, authority, money, equity, workload, information, review triggers and related-party rules before optimism becomes dependency.
-
What doing nothing costs
An engineering office near Munich puts one German renovation at about €160,000, the KfW grant at almost €42,000, and the twenty-year operating saving at more than €320,000.
-
What a click costs in 2026
The average Google search ad click ran $5.42 in the US over the year to March 2026, more than double a decade ago, but the gap between industries is far more useful than the average: legal clicks cost six times what arts and entertainment clicks cost, and conversion rate, not price, decides which ones pay off.
-
The invalid traffic tax
Four widely cited estimates of invalid ad traffic range from 0.5% to 35% of spend, not because the fraud problem is unclear, but because each source measures a different point in the supply chain: a brief on why the numbers disagree, and what the disagreement itself reveals about the true cost of invalid traffic.
-
AI at work: adoption by the numbers
Ask how many U.S. businesses use AI and the answer ranges from 18% to 78%, depending which federal survey answers first: the 60-point gap is not measurement error but a difference in how "adoption" is weighted, worded and reported, and this brief lays out exactly where each number comes from.
-
Ukraine’s business ledger, wartime edition
A closures slowdown, not a founding boom, explains Ukraine's swing from a net loss of sole proprietors in early 2025 to a net gain of 39,000-plus a year later, while company formation still runs a third below 2021 and three front-line regions keep shrinking while the rest of the country grows.
-
What one star is worth
Four independently designed studies, covering Yelp restaurants, hotel pricing across 11 cities and Amazon book sales, put a number on what an extra star is worth: 5 to 9 percent more restaurant revenue, up to 11.2 percent more hotel pricing power, with a consistently asymmetric effect in which a one-star loss costs more than a one-star gain earns.
-
How patients pick a doctor
Patient surveys from 2020 to 2026 agree that most Americans now check online reviews before booking a new doctor, with estimates running from 71% to 90% depending on question wording, but they disagree on trust: the share who treat a review like a friend's recommendation has fallen from an 84% peak in 2016 to under half today.
-
Where the clicks go: position by position
Position one on Google still wins the most clicks, but the margin is shrinking fast: four independently collected datasets, from Sistrix, Ahrefs, Pew Research Center and Seer Interactive, show organic click-through falling 32-58% by rank whenever an AI Overview appears, with early-2026 data suggesting the ranked but uncited page loses the most.
-
Global Talent, counted
Britain's Global Talent visa approves 99% of applications once they reach the Home Office, but only 72% of people who applied for endorsement between 2020 and 2023 went on to hold a visa, and at wildly different rates depending on field and nationality.