The HN crowd is vocal about tech paradigms they are familiar with, like social media, online shopping and streaming video.

But when it comes to the actual commercial infrastructure underpinning large swathes of the digital economy, the knowledgeable ones are drowned out by the uninformed bloviators.

This is clear when you look at the comments for stories related to Google/Facebook Ads (the ad product itself), Shopify, Mailchimp/Marketo or Salesforce/Dynamics CRM.