If you're developing webby bits on iOS, you can use one of the following tools/techniques to enable Remote Web Inspector debugging, currently just under the iOS Simulator on iOS >= 5.x:
There are issues, and this Safari extension is supposed to help with them
Download the binary extension right from github:
From Finder, double click the rewein-ext.safariextz file, and Safari
should launch with the "load this extension?" prompter.
List of things that this extension "fixes".
The default monospace font is Monoco 10px, which looks like crap on my boxes.
The extension changes this to use monospace 12px instead, which means it should also take into account whatever your default monospace font is set to in Safari preferences.