I have a Jetway board with a horrible name (random numbers and letters mixed is the type name) with a VIA chipset and VIA C7 Eden. The thing is really neat when it comes to being passively cooled and power consumption. Speed is fairly good for a 1,2 GHz single core. (Gentoo compiling) But it has a few hiccups, a few strange things happen that I do not experience on my other boxes. And the GPU support sucks but that's VIA's fault.
Support is indeed quite low, got a BIOS update once with minimum description. Fine if you want to build a low power file server or something but don't expect too much.
Was sold quite expensive for the small form factor (mini ITX are always more expensive).
Stop TCPA, stupid software patents and corrupt politicians!