To know more and more about the use of figures of speech in advertisement ... try with this quiz!!!

http://grammar.about.com/od/rhetoricstyle/a/quizfigslogans.htm

Text as an image.
The picture is the text.

Communication
with the observer.
Asks the spectator: “Aren’t you glad using Dial? Don’t you wish everybody did? (Dial soap)

Unfinished text.

The unfinished text lets the spectator give a "free" meaning of the picture.

Paradox.

Joins different ideas in the same image.

Comparison.
A is like B: it compares two objects or two situations. “You like it, it likes you” (Seven-up soft drink).

Two meanings or pun.
It has two different meanings “Cross the black line”(Ballantine’s black label)