Nice Web Type is one place for web typography, following experiments, advancements, and best practices in typesetting web text. Handcrafted by Tim Brown, Type Manager for Adobe Typekit.
Scott Kellum wrote a Sass function to find the context of deeply nested percentages. More info here. I could see this being very helpful for, say, typesetting hanging subheads.
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This was published on 4 Aug 2013.