I can honestly say from the experience of working on this project it is almost never as it seems. We began with targeting a very large segment of users (remember that time I talked about a keyword database of over 50,000 keywords?) but after a few months it turned out our largest (and most active) users were finding us from only a handful of targeted categories.
Building high-quality infographics is simply one form of clickbait. There are loads of clickbait examples that you can utilize, but not all of them are created equal. However, if you can build a great infographic that many people will link to, you can essentially create an automated marketing machine for your site. Ensure you hire a great designer to do this.