You created an account just to post this? Are you affiliated with them?
Since the site is new, it doesn't get that much attention from the aggregator's core audience, and any negative comments are swiftly downvoted after 10-20 employees register and downvote them via central command. This has happened to me on HN before; I guess because I take a perverse kind of enjoyment out of sabotaging astroturfing attempts.
All of this makes perfect business sense; I would probably do it too if I were in this kind of position.
It also makes sense for HN to build better defenses against attacks like this.
I guess that's why it has taken a couple of hours for my comments to heavily downvoted (comments that were initially quite heavily upvoted) in my previous attempts at smashing obvious astroturfs - their @all-employees mail needs to get to the employees who happen to have that amount of HN karma.
I do realize that going further than this in terms of defenses would be quite a complicated thing.
People like me.
I don't know if accusations of shilling are the kind of thing I should be flagging though.
We share your dislike of astroturfing, but people who feel this way need to guard against their own biases as well. Taking the accusatory impulse too far is also destructive.