I thoroughly agree with Lea’s approach. It’s all about the craft.
Single-direction margin declarations — CSS Wizardry—CSS, Web Standards, Typography, and Grids by Harry Roberts
Some smart thinking from Harry Roberts on standardising the direction of your margins in CSS i.e. all top-margin or all bottom-margin declarations.
The slides from Andy’s tour-de-force presentation at South by Southwest on CSS best practices.
Bert Bos's 2000 Treatise (published in 2003) is a must-read for anyone involved in developing any kind of format. "This essay tries to make explicit what the developers in the various W3C working groups mean when they invoke words like efficiency, maintainability, accessibility, extensibility, learnability, simplicity, longevity, and other long words ending in -y."
A surface skim of maintainability in front-end development.
It looks like Natalie's presentation at BarCamp London 5 was excellent.