What is important to understand is that if you look at a chart of the various grades next to each other (Try a Googlesearch for it), you will see a discernable difference in the grades.
But on Tuesday, Google.org, the philanthropic arm of search giant Google, announced it would try to help spur companies to reach underground to produce clean electricity.
Since she received no payments from the businesses she mentioned, Karin decided to try generating some income by signing up for Google AdSense, a service run by the Web search giant that pays bloggers to host ads on their sites.
He said the process will be expensive, time-consuming and involve terrabytes of data as regulators try to determine whether Google is providing efficiency and ease of use to consumers or hurting competition by serving up biased search results.