On this, I disagree. A link to pool stats is meaningless. They could have just about anything generating those terahashes on the back end. Even worse, assuming they really are real and functioning miners, then the pool stats are proof that they're pre-mining with the machines until they're worthless, at which point they will deliver them. Not encouraging.
Real proof would be a video of the mining rig running, hooked up to a PC (or whatever) and very clearly isolated from other machines. Real proof would be honest communication about what chips are powering the machine, how many per board, how to hook it up, what power requirements are, and so on, alongside the video. Real proof would be sending the machines to a few different trusted board members (I'd suggest ckolivas, Kano, and Luke-jr as they're the primary developers of mining software, plus a couple of hero-level members with good trust levels and plenty of trade history) for them to run, evaluate, and post photos and videos.
This is a suspicious community, and with good reason -- there are plenty of new scams every day, and most of them start out a lot like this post does. When proof of a working product is provided, the community almost literally throws money at these legit firms. Sadly, the less experienced will also throw money at the scammers, resulting in many fleeced newbies. As a community, we're hard on unproven companies in part to protect the newbies, and in part to protect ourselves. But prove yourself to be a valuable contributor, and you will be welcomed with oodles of cash and coin.
KyrosKrane, I totally agree. Great point. Maybe we should start a new thread for fact-checking of new 28nm ASIC companies. It will be very helpful for miners to tell what's the promises/lies and what's the facts.