Even if the copywrite or market audience is not the traditional business professionals it is still important for the copy to have a professional look and style. This is simply because copy that is too casual will not inspire confidence in your company or service. Using slang, poor grammar or using highly unconventional format may not be beneficial to your overall sales goals.
Copywrite usually starts with an offer or promise from the seller or marketer to the consumer. By offering something, even if it is not the main point of the copywriter or ad, you will often get people to stay and read a bit longer. The offer has to be relevant to the article you are selling or offering and should always be something that will happen for the consumer without a lot of catches and bait and switch strategies.