Just look at their website, they're selling batch 2 X-3 units with a stated shipping date of 15 May 2014. It's currently the 17th and not a single batch 1 order has shipped.
They sold pre-orders for 24 Feb 2014 dispatch until 29 Jan 2014. It takes 2+ months after tape-out to have the ASICs forged and packaged. Undeniable proof that they lied to get customers money.
This is fraud over $5000, an indictable offence.
First, it does not say it ships on 15 May 2014. It says it ships around 15 May 2014, which isn't an exact date.
Second, there are delays for all companies. Would you call all of them scam? No. Only Butterfly Labs and Hashfast, since they don't even have the equipment in production.
The initial plan was to ship late February, and up until January they claimed to be "ahead of schedule" and "definitely delivering in time"
Then it became early may
Then it became "in a few weeks"
Now it's unknown.
They are possibly not scammers but they are incompetent and they lie about delivery date and in the mining industry delivery dates are crucial.