What is Pay Per Click Advertising
Pay per click or PPC is Website promotion model used on search engines, advertising networks, and content sites in which advertisers pay their advertising provider (website, web portal owner) only when their ad is clicked and user surf the advertiser's website. With search engines, advertisers typically bid on keyword phrases relevant to their target market.
Content sites commonly charge a fixed price per click rather than use a bidding system.

Websites that utilize PPC ads will display an advertisement when a keyword query matches an advertiser's keyword list, or when a content site displays relevant content. Such advertisements are called sponsored links or sponsored ads, and appear adjacent to or above organic results on search engine results pages, or anywhere a web developer chooses on a content site.
Although many PPC providers exist, Google AdWords, Yahoo! Search Marketing, and Microsoft adCenter are the three largest network operators, and all three operate under a bid-based model. Cost per click (CPC) varies depending on the search engine and the level of competition for a particular keyword.
The PPC advertising model is open to abuse through click fraud, although Google and other search engines have implemented automated systems to guard against abusive clicks by competitors or corrupt web developers.
Market Research Reports
Desc:- Marketsmonitor.com provides Reports on Retail Industry, Business Research Reports, Market Research Reports, Market Segmentation, Apparel Industry Analysis.