Profiling Xml Schema

I've gotten some recent offline comments about the article I wrote called "Profiling Xml Schema" on xml.com.  Its been quite a while since I wrote the piece.  At the time I was attempting to cull a "best practices" guide on how schema developers are actually using this technology.  I've run into too many tool bugs with the more advanced aspects of the spec. Looking back, the article holds up pretty well.  Most of the recommended practices are still the norm today.