Blogging is supposed to be fun. Gina Trapani's heuristics for a blog post are pretty simple, and obvious. But sometimes we need to hear something from someone else for it to really sink in.
If it's a paragraph, it's a post. Medium-sized content gets short shrift these days. Don't go long. One or two paragraphs count. Then press publish.
Negotiate a comfort zone on two axes: personal and public, tech and everything else (feminism, musical theater, MMA, parenting, etc). 2001-era Scribbling.net was too personal, Lifehacker/Smarterware too tech. There's something in the middle.
Traffic is irrelevant. Don't even measure it.