Having used this, I feel that the previous reviewer missed the point.
Generators are prompts. Unless you are very lucky, the initial results aren't going to be ready to run. You have to apply creativity and judgment to either selectively rerolling on the table whose result you're not happy with or come up with a better fitting result off the top of your head.
Also you will probably want to rewrite the generated sentences to better express what you've come up with and to drop extraneous portions.
Applying this approach can produce surprising and satisfactory results.
I can definitely see how this can produce gonzo and sometimes gross things to put in your game. Will definitely be using this when appropriate to keep things interesting!