• Section: Money Guide - Category: Advertising Programs
• Written by Henry Allen

We did some exhaustive testing with various subjects,titles,and content,online,and we found that from among 59 different subjects people wanted to know about,getting Google ads free was the first choice and most desired topic and most sought after information from among 91.3% of the original 46,000 people surveyed.

We of course did extensive additional testing with 10,000 more of both double opt-in subscribers as well as our in house affiliates database,and which supported equally nearly the exact same results.

What this means(and why you should take notice of this fact)is that if you had your choice of anything to sell on the internet,an ebook on how to get Google ads free would be perhaps the largest seller in internet history.

And why not?Google is after all the largest search engine ever invented,second by Overture which i

s about 1/8th as large. Although some estimates suggest only 1/2th as large.so it stands to reason that any ebook or instruction that would show potential advertisers how to get TOP placements,top page ads there,but for free?

PPC engines can be categorized into two major categories "Keyword" or sponsored match and "Content Match". Sponsored match display your listing on the search engine itself whereas content match features ads on publisher sites and in newsletters and emails.

There are other types of PPC engines that deal with Products and/or services. Search engine companies may fall into more than one category. More models are continually evolving. Pay per click programs do not generate any revenue solely from traffic for sites that display the ads. Revenue is generated only when a user clicks on the ad itself.

Online Comparison Shopping Engines

"Product" engines let advertisers provide "feeds" of their product databases and when users search for a product, the links to the different advertisers for that particular product appear, giving more prominence to advertisers who pay more, but letting the user sort by price to see the lowest priced product and then click on it to buy. These engines are also called Product comparison engines or Price comparison engines.

Some Online Comparison Shopping engines such as Shopping.com use a PPC model and have a defined rate card.whereas others such as Google Product Search, part of Google Base (previously known as Froogle) do not charge any type of fee for the listing but still require an active product feed to function.

Noteworthy PPC Product search engines include: Shopzilla, NexTag, and Shopping.com.

Service PPCs

"Service" engines let advertisers provide feeds of their service databases and when users search for a service offering links to advertisers for that particular service appear, giving prominence to advertisers who pay more, but letting users sort their results by price or other methods. Some Product PPCs have expanded into the service space while other service engines operate in specific verticals.

Noteworthy PPC services include NexTag, SideStep, and Tripdvisor.

Pay per call

Similar to pay per click, pay per call is a business model for ad listings in search engines and directories that allows publishers to charge local advertisers on a per-call basis for each lead (call) they generate. The term "pay per call" is sometimes confused with "click to call". Click-to-call, along with call tracking, is a technology that enables the "pay-per-call" business model.

Pay-per-call is not just restricted to local advertisers. Many of the pay-per-call search engines allows advertisers with a national presence to create ads with local telephone numbers.

According to the Kelsey Group, the pay-per-phone-call market is expected to reach US$3.7 billion by 2010.

Pay per delivery (PPD)

A variation on pay per click used in email marketing, whereby email marketing campaigns are charged only on the basis of successfully delivered emails.

Keyword PPCs

Advertisers using these bid on "keywords", which can be words or phrases, and can include product model numbers. When a user searches for a particu

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