Online advertising can be a great tool for driving traffic to your Web site, for offering online specials, and letting the world know about your business in general.
Online advertising is done via banner ads, which appear on Web sites.
A more controversial method is junk email. These ads appear on other Web sites, simply draw people to yours. When a banner ad catches someone's attention, they click on it and go to your site. You take it from there. Banner ads can be purchased through media buyers, such as Doubleclick .