1. As of July 1, the Netherlands will ban smoking in public places.
2. The smoking of cannabis and hashish, however, will be allowed, at least in licensed cafes.
3. The regulation will be that adding tobacco to the smoke (a popular practice) will be forbidden and that only "pure pot" will be allowed.
4. It is noted that "This year, the Chinese have started to come."
That is from "What are the Dutch Smoking," in the 30 June 2008 issue of Business Week. Here is one related article.