One point = 1/72 of an inch One pica = 12 points One em = The distance horizontally equal to the type size, in points, you are using. Eg. 1em of 12pt type is 12pt. (Thanks to Joe for correcting me on this.)

A general good rule of thumb is 2-3 alphabets in length, or 52-78 characters (including spaces).

Your leading should increase proportionally to your Measure. Small Measure, less leading. Wide Measure, more leading.

Opera Mobile

we rarely mention specific browsers to clients

My CSS bugs and fixes log as I’ve come across them

First out is text-stroke, a new (and non-standard, so not for real-world use) CSS property that can be used to control the fill and stroke colours as well as the stroke width of text. A description and a couple of examples are available in Introducing Text-Stroke.