The online website business/sales depend on the quality of traffic coming to your site. If the traffic is relevant the business will grow no matter the traffic is low or high. In B to B scenario people looks for and read article which are related to their product or they search for very specific keywords [...]

Getting a Pay Per Click Knowledge is not a difficult task. One can learn the PPC basics from the Google adwords learning centre, yahoo help centre or adcenter help centre. I am sure one can learn the basics of PPC marketing in 2-3 months if he/she is keen interested in learning.
As a starter PPC [...]

Google is supposed to be the best search engine for marketing the products and services by online advertisers, because of its reach among Internet users. But the popularity has its own disadvantages namely:

High Competition
High Cost
High CPA

Yahoo and MSN are other search engines, which are popular among Internet users, and competition of advertisers is comparatively less [...]