1) For what reason? This question is in what we call the "sales" audience members. Tend to be some the motivators and persuaders in the group. They are liable to have the shortest attention span, but usually make up around 35% of any audience.
Businesses have taken their marketing techniques a notch higher, and now enters stiff competition. Without effective promotions, business enterprise will lag next to.
Video is a great way to produce a strong brand. Visual information is very powerful. When people see something, fortunately there is a greater chance that it will be remembered if it is in video.