Thanks for this discussion. Consider this another request for subnotebooks. I really want to keep my work data organized separately from beer-tasting, etc... And the hierarchical tagging just doesn't cut it. I would like to be able to create definitive partitions, so that diagrams from work don't accidentally pop up while I'm in a discussion with friends about lager - how embarassing! (and vice-versa wouldn't be so good, either) The only other option might be to set up 2 separate accounts - but I really don't want the hassle of that.