In fact, your advertising will be increasingly effective if you just keep it simple. Many advertisers fall into the common mistake of spoon-feeding the audience their message with an all you can eat menu of words, in an attempt to ensure their audience can fully grasp a concept. The effectiveness of an advertisement is decreased when the message is over written.
Words become cramped, and the appearance of the ad suffers.
If too much effort is required, the audience becomes unmotivated and disinterested. With this in mind, the message must aim to capture the attention of the audience in the smallest time possible with minimum effort required. The message must be clear and concise - less says more. It is often said that if you can't do it in a sentence, then you can't do it. Making your message simple is most often easier said than done.