Adds should be a tabu word and business model.

It takes people's attention, makes people fat and anxious and generally makes the world a worse place.

Everybody using adds as a part of their business model should feel bad.

As an extention of this there is no moral issues with using add blockers, despite what the businesses living of adds try to tell you.

Bad for them how? I would argue it has destroyed the value of Google as a tool. Sure it makes them tens of billions of dollars a quarter, but it has ruined the service in the end.