As you can see from this poster, the different types of font are used for effect aswell as information. The different sizes of text also help to indicate the difference in importance of words. At the top, there is also a catchy slogan, one that relates to the film, sometimes this is a quote, other times its an invite to see the film "if you dare" etc. This makes the veiwer interested as it directs itself at them.
The date of the film release also is relivent to show clearly on the poster, this informs. But it can also be used as a feature. Firday the thirteenth for example, was actually released on friday the thirteenth. This creates an effect of realism and relivance.
