This is some advice from "The Elements of Typographic Style" that is often better to ignore on the web. Vertical rhythm is mostly unimportant EXCEPT when you ha

This is some advice from "The Elements of Typographic Style" that is often better to ignore on the web. Vertical rhythm is mostly unimportant EXCEPT when you have text printed back-to-back on paper (you must ensure every line of text aligns so that bleed through isn't as distracting), or when you have multiple columns of text or facing pages. That is, it is really important for books and newspapers. Notice that the links in the left-hand column do not use the same vertical rhythm so the baselines of the links do not align with the baselines of the main text. That is the type of bad effect that vertical rhythm is supposed to help avoid. But, I bet most visitors didn't notice it and weren't bothered by it. Most implementations of "vertical rhythm" on the internet for a single column of text result in vertical gaps that are unnecessarily large. That is, implementing this concept is often counter-productive for must web pages. Notice in this blog post that there is too much space about the "Getting to work" heading, for example.