I really like it. Simple, clean, easy to use. And fairly inexpensive for a single license. Would like to see how it would integrate with a CMS/Blog as I'm sure everyone else would too.
"Built (…) according to the latest industry trends", yet it uses contenteditable. All the recent rich text editors (CodeMirror, Google Docs…) don't use contenteditable, and implement selection, focus, insertion, undo, etc themselves.
Still, the UI is really nice, and it can still be useful if you don't need the resulting markup to be perfect.
According to W3C, contenteditable is new in HTML5 (as far as I know HTML5 is an industry trend). Contenteditable is used just as a base and all actions are implemented using our own code.
I'm happy to hear that you like the UI. :-)