'bad' in that it doesn't actually work the way it's marketted perhaps.
It's a prediction engine. It will spew bad information and it's often dyslexic.
it's not something one can trust.
you get the information and sometimes it is correct.
for computer issues it's much better but it will ruin you partitions if you just do what it says.
Basically it's an advanced search engine, and content aggrigator. It allows one to gather a lot of information in a very short time but one must study it and decide what is useful and what is just hullcination.