In most cases, advertising should be informative and detailed. There are many types of marketing campaigns, such as brochures and flyers, that offer a lot of data about an event, group, product, organization or service. This can be very effective and is necessary to adequately communicate all the details about something that is complicated and intriguing.
However, there are other occasions for which a more subtle and abstract approach is necessary. One of the best ways to drum up support for an event, whether it be a concert, film showing, gallery exhibition or promotional giveaway, is to create an air of mystery around it. Posters, whether they're 11×17 inch, 12×18 inch or 18×24 inch posters, can accomplish this.
Posters tend to speak for themselves. They can be put up around a town, neighborhood or city and will pique the interest of consumers and enthusiasts wherever they're seen. Printed posters offer just enough information to cause people to be more curious but leave just enough unsaid that they will want to find out more. Whether this is done by logging on to the internet and doing some research or simply showing up at the event is irrelevant – the posters have already accomplished their objective.