Editor reviews are provided by professional editors who evaluate a blog based on the following criteria: Frequency of Updates, Relevance of Content, Site Design, and Writing Style.
400 is not such a special number. Its kind of like a thirtieth birthday. Worth commenting on, an interesting milestone but no fireworks. A few pints after work but no desk decorations or balloons. Its not a 500 post, and I don't think I ever celebrated...