One of the major bummers about Safari is that the "View Source" view is totally lackluster. No code highlighting, no live links, no line numbers, no refresh. Boooo. The BetterSource extension solves every one of those problems. I do wish there was an option to show only one of the buttons or the other in the header bar though (one is for original source and one is for generated source) I don't need both.Update: You can just right click the header bar and drag the one out you don't want.