Vision: Looking at an advertisement: be cautious about a deal you are offered—it could be a trap. Advertising something: you are not getting the applause or understanding you expected.
Depth Psychology: Something from deep in your unconscious is trying to get your attention. Maybe you have chosen to ignore or suppress it? See Poster.
It is a portent of a change in your method of making a living to dream that you insert an advertisement of any kind in a newspaper or other periodical.