Worth reading:

• Resources about threaded programming in the Bell Labs CSP style by Russ Cox
• Why Numbering Should Start At Zero by Edsger Dijkstra
• The Evolution of Language (XML irony) by Phil Wadler

Howto:

• Mozex. This gem should be standard in firefox, but isn't. The idea is simple: let the user specify what editor to use for TEXTAREAs, view-page-source, mailto, etc. One problem: the configuration menu doesn't appear in firefox (it does in mozilla). The workaround is to use the URI chrome://mozex/content/mozexPrefDialog.xul directly to configure mozex. Type that in, and bookmark the page after it loads.