Deep linking involves using a hyperlink to send PPC traffic to the most relevant content within your website (though not your homepage as generally not considered ‘deep’).
Blog posts and glossary’s are a common strategy for encouraging deep linking to a site. Essentially any page other than the homepage could be classed as deep linking.
Conversion marketing – Glossary of Conversion Marketing.
Over 300 tools reviewed – Digital Marketing Toolbox.
Keyword research – How to do keyword research.