> Second is "Trello is now half-million strong." The headline, nor the article, told me what the heck Trello was. How is that a problem in that particular case

> Second is "Trello is now half-million strong." The headline, nor the article, told me what the heck Trello was. How is that a problem in that particular case? This was not an introductory post for Trello. Introducing you to the product was not its purpose. This was an update on the product's blog telling you that Trello now has 500k subscribers. But if you for some reason clicked on the article wanting to know what Trello is, I'm pretty sure they have a link to the actual product right there. Including an introduction to Trello in the article text would have been a waste of most people's time.