Do you use MonoMac? If so: I'm currently looking into that, but the mailing list (mono-osx) seems pretty dead, with lots of unanswered questions (including mine). Is there a better place to ask questions? I'm a little concerned about building on a platform with minimal community support.
Yes. I am using MonoMac and I also watch that mailing list. There are quite a few objective-c bridge solutions and I looked into most of them. MonoMac seemed to be the one that made most sense but mostly because some source code of MonoMac is shared with MonoTouch (or visa-versa). So, I think MonoMac is a stable/good choice for that reason. In the end, I was much happier with Carbon but that is another story.