- job ads and classified ads that can also be called listings
- ads for events that can also be called notices
- product description on services like Amazon and Ebay
- websites describing products and services
- 1st hand and 2nd hand mentions of products and services online that can be as close to the
Some of the comments here seem to hold only for a narrow definition of ads.
I prefer to think of all of this as marketing, as ads are part of the marketing mix. As we see, the distinction between ads and other similar things is blurry.
I am not defending the volume of ads. There's way too much of it. I am making the unconventional and unpopular statement that sometimes marketing and ads do deliver value.
It's better to narrow the critique of ads the way you did because that leads to a more constructive conversation.