Features of my dream blog engine
- simple, small, fast (lightweight)
- no or minimal default design, customizable through css
- flat file based (no database)
- clean urls (not only for apache!!!)
- posting is possible through two interfaces (uploading text files and creating posts in browser)
- breadcrumb navigation
- markdown and/or textile support
- rss and atom feeds
- tags
- search
I think that's it.