I heard it was crap. By looking it at just now, I can confirm what I've heard. More garbage for the recycle bin. Yawn.
What makes it and others crap is because it just replaces words using a thesaurus. Unfortunately, the sentences take on new meaning with the replacement of words. Also, changing one word might be okay, but when you start doing it multiple times in a sentence without checking, you're heading for disaster. Actually, I was testing something this week that did very well. But the reason it did well was because of me and not the software. My spun articles read well and were at least 45% original from the rest, which is good enough (most people shoot for 30% original).