Everything PRO from one poster is no more helpful than everything NEGATIVE from another.
I know personally, I'd be much less likely to believe either one of them in that case. I'd rather see someone who can speak to both the good and the bad in the same breath. At least then it comes as a more balanced approach.
If there is really nothing good at a particular job (how often do we hear 'I love the people/crews/etc...' but......), then share why you joined the company in the first place and what you THOUGHT it was going to be like, and how it ended up being like. These people are making the same decisions that you made however long ago and I'm sure that someone coming across an internet forum didn't persuade you to change your mind either.