This seems like a great starting point for anyone who is interested in designing a website with a strong emphasis on text content (think blogs, online magazines, etc). If you've ever tried to formally study typography, it can be pretty overwhelming. I'm a web developer with an interest in design, and type is one of those things that seems simple until you realize you have to understand it intimately at multiple abstraction levels (individual letterforms, lines, and blocks of text). Glad to see there's a resource out there that uses typography best practices and makes them sensible defaults.