Saturday, March 15, 2008

Adsense Software

Google's Adsense is an interesting little thing. You put the ads up on your site, people click on them, and the advertisers pay Google to pay you. It seems rather straightforward and it is probably best not to think too hard on how the software used actually works. After all, even a few computer-savvy folks out there can’t make heads or tails of Javascript, which Google uses as the primary software tool.

For the curious, however, here’s a basic rundown of how it all happens. There’s the ad on the website. Every time somebody clicks on it, the ad sends a message to Google that somebody clicked on it. At the same time, the ad also sends a similar message to the advertiser. Now, since both the company and Google know that your site is getting people to click on your site, they'll have no problems paying you for keeping the ads up there in the first place. In other words, the ad lets Google and the advertisers know what site you were looking at when you clicked on an ad, what ad you clicked, and where that click took you.

The fun part is that since Adsense software is mostly Javascript, it doesn't take up a whole lot of computer space. If you crunch the numbers, you can actually find out just how many servers Google needs to keep the software and ads running 24/7. Compare that to just how much Google makes from advertisers minus the cost of the checks they send out; indeed, it isn't hard to see how Google is making money out of this.

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