For both search engine optimisation and accessibility to ensure that the link phrases
used across your website accurately reflect the target of the link.
Absolute v relative?
If someone takes content from your site, that contain your internal links it would be better
if those internal links are absolute then on their site your internal links point back to your site and away from theirs.
From a talk given at the British Library on SEO by Lucidica on March 4th 2010. An IT company based in London.
Links
Lucidica website
lucidica.com