I'm writing articles for typearea.de now.
type:area is a service provider for typesetting and layout in LaTeX and ePUB, which makes it the perfect fit for me. So I'll post technical stuff about eBooks there, sadly in German language only. If your German is good enough and you're interested in typesetting, visit the blog, stay awhile and read. My boss, Tina Giesler, is rather knowledgeable in her field and all things related to publishing.