The advertising industry is developing very fast, from newspaper advertising, magazine, to TV advertising like creative direct TV commercials, to internet advertising. Now internet advertising becomes hotter and hotter. Because most people are using internet in their daily lives. Where there is man, there is money, this is a golden formula. This is why internet advertising is so popular and profitable.
There are many kinds of advertising online, textual advertising, audio advertising, video advertising, maybe we can say video advertising is the most effective way to advertise online. Video websites like Youtube, DailyMotion, Metacafe are making tons of money using this method.
I have enough reason to predict that online video advertising will dominate the advertising industry in 3 years.