Here is another example of how to create tangible (and lasting) value for your audience through a useful and low-cost tool.
The guys from AdTuo (an app that optimizes FB and Google ads) have created what I would call a "newsradar" on "Growth Marketing".
In practice they have created a web page accessible to all where you can find the most authoritative and relevant news on "
Growth Marketing".
In doing so, they offered a useful and free tool that intercepts a specific need of their audience: to stay up to date on Growth Marketing.
This saves time for the reader and discreetly but effectively promotes your brand and services.