This is a different kind of sleezy. Adding travel insurance to a flight happens before the user has agreed to the deal. In this case Disqus has hundreds of thou

This is a different kind of sleezy. Adding travel insurance to a flight happens before the user has agreed to the deal. In this case Disqus has hundreds of thousands of people signed up for a commenting system and then changed the product fundamentally without asking them if they want this new product. That's exactly why it is (correctly) described as a bait-and-switch.