Love the UI. Its very intuitive. This will be a killer tool when they get it working reliably. I recommend stacking up just for the potential of it.
For my test, the keyword lookup worked well but then it went south from there. Things started failing when doing content analysis on the keyword list. Out of 34 keywords that I performed content analysis on, all failed but 4. It burned through credits but no analysis on 30 out of 34 keywords. I contacted support through the form and we'll see how that goes.