Stefan - 2:47 am on Jul 19, 2010 (gmt 0)

Absolute links, absolutely. I did otherwise early on, and learnt my lesson. Spent many hours afterwards fixing things.

if the full url contains two or three keywords, would changing root-relative links to full-absolute links increase the page KW density over the limit, and incur a filter?

Can't see that happening unless one is trying to game things already with many unncessary kw's.

The increased page size will definitely significantly lower page loading speed, to which G has become sensitive to the point of obsessive.

I don't know, man. If your code is clean, with no auto-generated bloat, it's a minor factor.