I think Steam would be hard for them to get hosted on, personally - based on what I know of Valve's process. Just used it as an example, because everyone knows what Steam is by now. Gamersgate and Impulse have a lot less name recognition.
But still, I have seen quite a few references to MG on this and other forums, but never seen their games for sale anywhere. Just kind of wondered.
After googling their site, I see that they sell direct - but they only offer at Euro exchange rate, which is hideous right now for those of us in the USA. /facepalm
Just curious, because it just seems so odd. Once I learned Higurashi had an official english translation, I went to go buy it - and could not find anywhere that sold it. Until I googled Mangagamers, and found their main site and insane USD pricing. ( and insane DRM )
But anyhow, didnt mean to get so far off topic.