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This looks like an advertisement for Wellio.

The linked article, links to a Wellio page with the same content verbatim. http://www.getwellio.com/ranking-least-nutritious-meal-dolla...

The information may be useful still, but it should presented as long form advertising

> but it should presented as long form advertising

Yes. I think these are usually tagged or labelled as "Sponsored Posts".

Priceonomics runs a service that produces interesting content for their clients based on their data. That's what this is.

Most content on HN would probably fall under your definition of "long form advertising".