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In many ways, online advertising is quite similar to advertising in traditional print media. An ad is an ad, after all; it’s nothing more than a paid display of your promotional message.
With traditional advertising, you pay for space on the printed newspaper or magazine page or you pay for time on radio or television airwaves. With online advertising, you pay for space on a web page.
So, the pay for placement thing is pretty much the same. What’s different about online advertising is that you have a lot more say over where your ad gets placed and who sees it, which is important for B2B companies. You also can track each ad’s performance with a level of granularity not possible in traditional advertising—right down to the individual person clicking an ad.