Tiggerito - 4:38 am on Jul 19, 2010 (gmt 0)

I personally go for relative, to keep the size down.

With CainIV's interesting experiment, and Angonasec comment on keywords I will keep my mind open.

An idea for keyword stuffing (don't try this at home)

/keyword1/../keyword2/../realpage.htm

I would hope search engines process the final path when gathering keywords so this is not possible.

Another possible negative for relative is that spiders can also get it wrong. Recently a spider (LexxeBot) has been trying to index pages that it has obviously miss calculated the absolute path to.