- Cost/benefit analysis does not favor Google to do personalized news
- every hard to determine the best news headlines to show you from the 100,000++ available news sources
- the training data available about you is very sparse
- the actual increase in conversion rate click through is very low
- Google does not serve ads for news – against their policy
- Facebook determines the best content to serve you based on the behavior of your connections
- the content set that your connections interacted with is smaller
- the number of your connections are relatively small
notes, learnings and reflections for future self reference