I've seen these guys advertised around Bitcointalk, would anyone even vouch for them? Just curious as to what everybody thought.

I see their ads on this forum for several times.

what is haobtc's ad? I never see it. or I ignored it.. Undecided

but I can believe that any cloud mining was a scam Angry

Here more details: https://bitcointalk.org/index.php?topic=1023187.0

I don't know if is legit or not, still watching on, looks like their show seriously.