I do have Wordai too but im not impressed with it. Its probably ok for tier 2 & 3 but for tier 1 its not unique, quality content.
But, i invested the time to see the results. I started with a 700 word article and i rewritten each sentence between 3-5 times.
Then after generating and comparing 100 articles i was only getting between 67 - 94% uniqueness.
When i visually compared the articles with the matching text highlighted, i could see in most cases between 20 - 25% matching words.
So my question is - are these articles any good for web 2 properties even though they have up to 25% matching text in some articles out of 100 generated articles?
Will it hurt my money site if i use them for tier 1?