I wonder whether the trend began as the amount of low quality click-bait on the web increased. &#x27;Learn More&#x27; maintains a purposeful ambiguity - if users have read the summary, they&#x27;re likely to have a fairly good idea of what they are reading about and whether they want to know more about it.<p>If there is not much more content to actually be seen in the article, it works in favour of those producing quick and easy content to hit metrics as they won&#x27;t be over promising.