What Norwegian publisher Aller Media has learned from its personalized paywall

“Paid content is super big, it’s messy and we have to do everything at once,” said Christoph Schmitz, product developer, subscriptions, at Aller Media, speaking onstage at the Digiday Publishing Summit Europe in Barcelona this week. “Everything we do has to scale.”

For subscription publishers, managing ad revenue and subscriptions is a balancing act. Dagbladet’s homepage, which is still a significant traffic driver in Norway, has a limited number of slots where it can show premium content. For the past six months, it’s been testing what to show in those slots. For now, the test is running on 5-60 percent of its user base, but the plan is to roll the test out to all users imminently.

The algorithm is based on four factors: how recently the content was posted (as a news site, this is important); collaborative filtering, or, what similar audience profiles are reading; impressions; how many times an article was served but not clicked on; and how many times an article converted readers to subscribers.

The tests resulted in a significant increase in getting readers to subscribe, especially to one-month and three-month subscriptions (the publisher also offers weeklong and annual subscriptions), Schmitz said.

Understanding the types of content that will convert readers is a common preoccupation. Previously on Dagbladet, articles on sex scandals or how to save your marriage would be the typical subscription drivers, Schmitz said. Tests found that subscribers are more likely to keep reading more premium content, making them less likely to churn.

This isn’t the first time Aller Media tried personalizing content for subscribers. For a year, it used a third-party vendor to help personalize its content to subscribers, with disappointing results.

“It was a black box, we didn’t know the algorithms, we couldn’t trust it,” said Schmitz.