Today, consumers are spending more and more time away from their homes. Subsequently, advertisers are spending more and more of their media budgets to reach consumers on the go. Outdoor advertising or out-of-home advertising is booming.

In fact, according to the Wall Street Journal, out-of-home will rank second only to the Internet as the fastest-growing form of advertising, growing by 40% over the next four years from $7.4 billion in 2007 to more than $10 billion in 2011.

The reality of traditional advertising today is that as people become more bombarded with information, they tune it out. Consumers control messages by screening out advertising clutter and selecting ads that are relevant when they are ready to make a buying decision.

The bottom line -- traditional advertising has limits and outdoor advertising is becoming a more important medium -- because outdoor can't be turned down, tuned out, turned off, tossed, changed or ignored.