In plain English
The levels run from segment-based, showing different content to different audiences, through behavioural recommendations, to individual-level adaptation.
Most of the benefit is at the first level and most of the cost and risk at the last. Segment-based personalisation is cheap, safe and effective; individual-level rarely justifies itself.
What to know
Why it matters
Showing a returning reader something they have not read is worth doing. Anything that reveals how closely you have been watching costs more in trust than it gains in relevance.
Common mistakes
FAQs
Where should I start?
Recommending relevant content by topic. It is simple and it works.
When does it become intrusive?
When the reader cannot tell how you knew.
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