I know that a lot of us are familiar with setting the font size on the body element in our CSS to 62.5%. This means that 1em will equal 10px and helps for keeping things pixel p
For anyone who arrives at this useful post, I would like to share a link for a youtube video (approx.48 min.) about good web typography. It's actual and gives everyone a significant insight that changes the way you set type for the web.
I just made some subtle changes based on this conference video, and the results achieved were perceived, even by our users, as surprising.
The presentation is from Richard Rutter, and the link for the presentation is Richard Rutter | Web Typography