NovaExchange is run by one guy. A friend of mine knows the guy who runs it. I can attest that although the site may not have the best usability, it is reliable.
all that is based on only one person can not be reliable.
I have purchased onion using nova exchange a few times over the last 3 weeks, and have had positive experiences each time. I would still love to see it hit some other exchanges as the demand for this coin is clearly huge. More accessibility, more buyers and sellers!! Let's get them any way we can for now and hold on to them!