I don't use them yet Loren, I am debating weather or not it's necessary or convenient. I am a little concerned with the "Experimental" status tiki namespaces has, so I am not sure if it's a good time to implement them. I did like the MW namespaces, as you mentioned, they were very convenient, hmmm, the verdict is out if I am going to use them or not, but I need to make up my mind quickly before my site is developed much further.