Let me add my thanks as well Clark, I just started messing around with Unity this last week and had started messing with the C# and using SE and Google led me right here.
Another thing you might consider is adding a ".NET" or "Mono" group to the tagging options that would auto-select .DLLs as the tagging type. My first attempt was to try to scan .cs files which, obviously Unity doesn't have. (Although a Unity project type on SE would be great too)