Aside from the ID issue, until something is delivered we have know way to know whether this guy can code to save his life. No notable previous projects, etc.
Also... C? Really? I could understand C++, but C.... ?
What's wrong with C? Its still one of the most popular languages in exsistence and has benefits over C++..
Given the kinds of things Bitcoin needs to do, it also seems to me that doing it in C would be a big disadvantage.
given that C++ is a superset of C, I really don't see any benefit of C over C++ for a complicated bit of software like a crypto-currency...
If you do it in C you are not able to use Boost and other helpful C++ libraries.
Bitcoin was written in C++ and leverages these libraries, probably for a good reason.
So, I think xibeijan is spot on.