Search marketing has come a long way over a very short period of time to revolutionalise both on and off line advertising. Superior measurability, targeting and a cost per click pricing model has ensured dramatic growth and the ability to take market share from traditional promotional vehicles with ease. Google will soon become the UK’s leading company in terms of advertising revenue a position enjoyed by ITV for many decades.
Pay per click is the pricing model adopted by search engines to generate income from search result pages. The pricing model lets advertisers bid on keywords they feel are relevant to the product/service they provide and encourage potential customers to their websites with enticing advertising text.

Google AdWords provides a simple interface for advertisers to take advantage of the search engines large number of visitors. Google also incorporated a algorithm to reward highly relevant advertisers using an element called the "Quality Score", understanding and maximising the influence of this simple calculation is essential for a successful pay per click campaign with Google, Yahoo and MSN.