However, I'm still worried that it is scam. I read the chat on their site today. I have the feeling the admin hedges around a little bit when it is about showing photos of the datacenter.
I wouldn't worry a bit.
I was there in chat when they first mentioned having taken photos of one of the data centers that day and the intention to post them up a bit later.
I was also there in chat when they mentioned that they wanted to make the place look better and take them again.
Do you own a mining rig? A real one, not just a gpu in a gaming case, we're talking multiple cards on cables, dual power supplies, oversized cpu coolers and so on. To a techno-geek that overclocks hardware for sport... the photos they took are probably a wet dream.
Unfortunately, the reality is that people are sheep. An investor with a large chunk of bitcoin takes a look at racks and racks of jumbled hashing wet-dream and freaks out, backs away slowly and starts contemplating junk bonds.
I've repaired and built computers for 20 of the 30 years I've worked in computers and run into all kinds of mentalities that crop up around them.

Also how about adding a display kh/btc for current price, i had to ask someone in the chat box for the going price.
That's just below the order window on the left...

You can actually click on the top sell order and the price will automatically be entered into the price area of the sell order section.
Keep it Clean!

Just for a laugh. PMSL