How do we do it ethically?
We should want to advertise what we do to eachother
There are adverts I am interested in receiving, I should have an inbox for them
In-Game Problems as Advertisement Locks
That is, information needs to be screened. The so-called "advertisement" is produced and published for the purpose of promoting a certain product. If this kind of product is not what people want, or the advertisement exaggerates the utility of the product, then this kind of information is spam, and I think it can be regarded as "non-ethical".