Using the adwords promotional code you can get £20 applied to a new adwords account. The minimum you will pay for one user to click on an ad (a lead) is 4p - yes only 4p!

Whats more with adwords you are always in controll of your spending. You can apply a real low daily limit to your ad campaigns to start and keep within your budget.

Keywords are 'triggers' for your ads. Basically if you want your advert to be displayed on the page when somebody searches for eg 'paper plates' then you use the keyword 'paper plate'

There are four ways to input a keyword.

1. smart keyword
2. "smart keyword"
3. [smart keyword]
4. -smart keyword

Option one means the smart keyword can appear anywhere in the users search.

Option two means that the smart keyword has to appear as a phrase (one word after the other) within the users search.

Option three means that the smart search has to be the exact thing the user searches for.

Option five means that if the user search for the smart search, you ad will NOT show.

See Google for an exact list of the networks that your ad will appear on.
Content Network

Googles Adwords is the largest advertising network in the world and will give you the ability to either target just users of google or place ads on any advertiser within the 'content' network.

You can at any time filter what websites will show your ads, by adding urls to the 'banned' list in your addwords account.