Oh. Hmm... well, the selenium framework is still very good. I still recommend they support it. But if their target costumers are only Microsoft stack devs then.... I have no comment.
I didn't mean it negatively, but their primary tool is a C# cross platform app builder which compiles to native code. They are a C# shop and are building products (including this new service they just bought) that make sense for their primary users. C# developers (theoretically also Linux devs running Mono).
