Boagworld looks at 10 ways to design an effective call to action.

Having an effective call to action is an essential part of any website. A call to action is not just limited to ecommerce sites. Every website should have an objective it wants users to complete whether it is filling in a contact form, signup for a newsletter or volunteering their time.

A call to action provides...

Focus to your site
A way to measure your sites success
Direction to your users

See the full article on Boagworld.

http://boagworld.com/design/10_techniques_for_an_effective/