What Can it do for Me?

In three words, “earn you money.”  More relevant ads on
your pages translate into more clicks—and more money that you
receive. Because when users click on an ad, Google will pay you.
With Adsense, you get a reporting page that gives you a breakdown
on how your ads are doing and what they’re bringing
in.Google has a huge advertiser base, so they have ads for all
kinds of businesses and for just  about every type of content no
matter how broad or specialized it is. And since Google provides the
ads, you don’t have to spend time talking to your advertisers.
Adsense represents advertisers that span the spectrum.
These advertisers range from large global brands to small and local
companies. And ads are targeted by geography so global businesses
can display local advertising easily. One more thing: you can use
Adsense in many languages.So how does Adsense figure out how to do all this targeted
advertising?  Well, Adsense has the ability to deliver relevant ads
because the gurus at Google understand how web pages really work
and they’re continually refining their technology to make it smarter
all the time.
For example, some words can have several different
meanings depending on context.  You’ve seen this happen with
“two” and “too” and “to.”  Google  technology is smart enough to understand these distinctions from the context that the word
appears in, so you get more targeted ads.
When you put a Google search  box on your site you start
making money off of web searches that people do on your site. This
ability to search off of your page keeps them on your site longer—
since they can search from right there where they are—and it will
only take you a few minutes to get Adsense up and running.   The
best part, of course, is that Adsense is free for you to use.