Top all-time · #8511
Mack Grenfell
Personal blog · mackgrenfell.com/blogaibusiness
Mack Grenfell's personal blog at mackgrenfell.com covers ai and business. Since 2020, 9 different Hacker News readers have linked it 27 times, most often “How did Uber waste so much ad money?”. It is still writing: the last post was on 2026-06-01, and you can follow it by feed.
Too few sampled comments (1) to say how often HN recommends it.?
Why HN links it
The only comment cites Uber's ad-spend cut after iOS 14 tracking changes, in a discussion of ad fraud in programmatic advertising. It says nothing about the blog's writing.
Summarised by Claude from a sample of 1 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
Writing about AI, programmatic SEO, and building software.
Most-linked posts?
- How did Uber waste so much ad money?3 people · 4 mentions · first linked 2021-01-08
- What if performance advertising isn't just an analytics scam?2 people · 3 mentions · first linked 2021-10-15
- Building 2k Unique SEO Pages with GPT-32 people · 3 mentions · first linked 2021-10-07
- Show HN: An interactive Covid-19 growth model2 people · 3 mentions · first linked 2020-03-09
- Show HN: How to Build Probabilistic Marketing Forecasts2 people · 2 mentions · first linked 2020-01-24
What Hacker News says?
Given how rampant ad fraud is in programmatic, I wonder how much revenue actually drops for these companies, relative to the decreased ad spend. Uber’s [1] experience is one example: “We turned off two thirds of our ad spend – $100m out of annual spend of $150m – and basically saw no change in our number of rider app installs. What we saw is a lot of installs we thought had come through paid channels suddenly came t…
Comment linking /blog/how-did-uber-waste-so-much-ad-money
on “iOS 14 tracking changes sees big ad spending drop, tumbling prices”Submitted Mathematical marketing: a piece of calculus to change the way you advertise as a story · 121 points
HN discussionSubmitted What if performance advertising isn't just an analytics scam? as a story · 86 points
HN discussionSubmitted Show HN: FAANG Compensation Calculators as a story · 27 points
HN discussionSubmitted Building 2k Unique SEO Pages with GPT-3 as a story · 12 points
HN discussionSubmitted Show HN: How to Build Probabilistic Marketing Forecasts as a story · 10 points
HN discussionSubmitted Show HN: An interactive Covid-19 growth model as a story · 9 points
HN discussionSubmitted Building 2k Unique SEO Pages with GPT-3 as a story · 8 points
HN discussionSubmitted What if performance advertising isn't just an analytics scam? as a story · 5 points
HN discussionSubmitted Predicting Ad Price Growth with Earnings Reports as a story · 5 points
HN discussionSubmitted What would exponential growth of Covid-19 in the UK look like? as a story · 4 points
HN discussionSubmitted US COVID19 Forecaster as a story · 4 points
HN discussionSubmitted Show HN: An interactive Covid-19 growth forecaster as a story · 4 points
HN discussionSubmitted How did Uber waste so much ad money? as a story · 3 points
HN discussionSubmitted Building 2k Unique SEO Pages with GPT-3 as a story · 3 points
HN discussionSubmitted Building Probabilistic Marketing Forecasts as a story · 3 points
HN discussionSubmitted Conversion Lift Tests Are Dead; Transitioning to Geo-Experiments as a story · 2 points
HN discussionSubmitted How did Uber waste so much ad money? as a story · 2 points
HN discussionSubmitted How did Uber waste so much ad money? as a story · 2 points
HN discussionSubmitted Facebook's ad targeting is inaccurate – does it matter? as a story · 2 points
HN discussionSubmitted Marginal CPAs, Explained as a story · 2 points
HN discussionSubmitted 15 Graphs Which Show How Coronavirus Is Changing What We Search For as a story · 2 points
HN discussionSubmitted Battle of the Bots: How Market Makers Fight It Out on Crypto Exchanges as a story · 2 points
HN discussionSubmitted What if Performance Advertising isn't Just an Analytics Scam? as a story · 1 points
HN discussionSubmitted Marketing CPAs, Explained as a story · 1 points
HN discussionSubmitted If you want to design effective ads, learn to play Battleships as a story · 1 points
HN discussionSubmitted Facebook still makes it easy to target ads to cancer patients, Muslims, etc. as a story · 1 points
HN discussion