Maybe they're using it as a filter for smart developers. There's a lot of shitty scripty developers out there, but if you can show you know C you're pretty much

Maybe they're using it as a filter for smart developers. There's a lot of shitty scripty developers out there, but if you can show you know C you're pretty much guaranteed to be at least decent. But then again, it might be written in C++; some very very large sites are. For example, OkCupid.