Absolute vs. Relative links with sitemaps

The wisdom on this from a couple of years ago is that across your site you want to use relative references. Then, in the sitemaps and in all links to the homepage, you want absolute references all the way to the Http://. Can anyone confirm that this is still the case?

I've always advocated using absolute links across a site for several reasons:

1. More opportunity to get keywords in the link
2. Scraped content points back to you
3. Links don't break if you edit/move pages

The only advice I've heard that endorses using relative links is that it can save a fraction of a second in page load time.

I'd love to hear what other opinions people have.