You’re not getting as many replies to your messages as you’d like. Why is that? Well, there may be many reasons, but I’m discussing one of them here. It’s the psychological cost of processing an email and acting upon it. My hypothesis is simple: The higher the psychological cost of answering an email, the lower the response rate. This means…
Introduction This is a simple post about some commonly known features of online ad auctions. Generalized second-price auction (GSP) is a mechanism in which the advertiser pays a marginally higher bid than the advertiser losing to him. It encourages the bidder to place a truthful bid, i.e. one where the price level is such that marginal returns equal marginal cost.…
Background In the Hindi scripture there is a famous passage in which the god Vishnu describes himself as death; to Westerners this is mostly known through Oppenheimer’s citation: “Now, I am become Death, the destroyer of worlds.” But, there is another god in Hinduism, Brahma, that is the creator of the universe. How does this relate to startups? Just like these…
Introduction Google has made a major change in AdWords. Ads are now shown only in the main column, no longer in the right column. Previously, there were generally speaking eight ads per SERP. For some queries, Google didn’t show ads at all, and additionally they’ve been constantly testing the limit, e.g. running up to 16 product listing ads per results page. But…
Introduction A major issue of corporations is how they can avoid being disrupted. This is a commonly established issue, e.g. Christensen discusses it in his book “Innovator’s dilemma”. But I’m going to present here a simple solution for it. Here it is. Rule Number 1: Don’t look at absolute market shares, look at growth rates I call this the “Vanjoki…
Introduction With this post, I’m anticipating the next phase of debate on European financial crisis, as the problem of asynchronous economies isn’t going away. The continent is currently riddled with the refugee crisis, but sooner or later the attention will return to this topic which hasn’t been properly dealt with. The problem In brief, there are two countries: Country A –…
Introduction This is a short post explaining the correct way to calculate ROI for online marketing. I got the idea earlier today while renewing my Google AdWords certificate and seeing this question in the exam: Now, here’s the trap – I’m arguing most advertisers would choose the option C, although the correct one is option A. Let me elaborate on this.…
Introduction Carryover effects in marketing are a tricky beast. On one hand, you don’t want to prematurely judge a campaign because the effect of advertising may be delayed. On the other hand, you don’t want bad campaigns to be defended with this same argument. Solutions What’s the solution then? They need to be quantified, or didn’t exist. Some ways to…
This is a follow-up post on my earlier post about “fake” conversions — the post is in Finnish but, briefly, it’s about the problem of irreversibility of conversions in the ad platforms’ reporting. In reality, some conversions are cancelled (e.g., product returns), but the current platforms don’t track that. So, my point was to include a ‘churn coefficient’ which would…