Adware is present on many of the websites visited by internet users every day. Adware is ad supported computer software that permits the website owner or web host to display advertisements to visitors as they land on the website. Some types of adware software is capable of installing itself on your computer while you are visiting a site.This ad supported software is often used to offset the costs of hosting a website or to offset the costs of the web designer . Many webmasters can even use certain ad supported software to generate separate streams of income.Malicious adware is software that gathers personal and identifiable information about visitors