PPM systems or Pay Per Million Impressions, where advertisers pay for the products advertised via Google based on the number per thousand impressions, or his views on the ad.
System PPC or Pay Per Click, where the advertiser pays based on the number of ad clicks didapt of these ads. So if the ads appear on Google search engine but nothing to click, advertisers will not pay the cost of running ads.
AdWords is Google’s strategy with targeted Keywords or keyword search. So we can target our advertising out to a specific keyword. For example, if someone wants to advertise on rental cars, so he can target the keyword "car rental" on Google AdWords and then the ad will appear in search results when people enter the keyword "car rental".
When companies join the social channels, consumers can interact with them.
That interaction feels personal to users because of their previous experiences with social networking site interactions.
Through social networking sites, companies can interact with individual followers.
This personal interaction can instill a feeling of loyalty into followers and potential customers.
Also, by choosing whom to follow on these sites, products can reach a very narrow target audience.
Social networking sites and blogs allow individual followers to “retweet” or “repost” comments made by the product being promoted.
By repeating the message, all of the users connections are able to see the message, therefore reaching more people.
Social networking sites act as word of mouth. Because the information about the product is being put out there and is getting repeated, more traffic is brought to the product/company.