The benefits of tabs vs spaces can be argued either way (and passionately!).  I'm a tabs man, myself.  Still, I'm REALLY interested in the reasons behind SA1200's 'using directives must be placed inside of the namespace' (which isn't heaps good english, anyway), especially when the Microsoft class templates place the using directives OUTSIDE the namespace.  I'm not being critical (well, not negatively, anyway), but I am interested as to why I should change my Microsoft-taught programming habits...  Nice tool, but...