You're right, it's not me that needs to understand, it's the developers, but I'm here having this discussion and they're not. Hopefully, though, they'll read this, and they might change their minds if you can present a persuasive argument. I was trying to help clarify what it is about the subnotebook metaphor that you think works better than tabs, in the assumption that if you can convince those of us who don't get it, you can probably convince the developers too. Call it playing devil's advocate if you like! It seems from what the developers have said so far that they don't get it either, so if you feel strongly then it's clear that you need to make them understand your point of view. To those of us who use tags as handy little multi-purpose labels/folders/categories/whatever it's difficult to see why you can't just use tags. I'm not saying you're wrong and I'm right, just that it isn't obvious to people who don't share your point of view. The Evernote developers no doubt have a lot of features they keep getting asked for, in addition to the "road map" they will have planned out for Evernote, so they can't just implement every feature they get asked for (as someone else said, it could just be a vocal minority asking for this). I'm sure they could be convinced, however, if you can address the arguments against this feature request. Also, I'm here because I'm actually very interested in how other people use Evernote. I read these forums to get a variety of perspectives and hopefully pick up some new ideas, perhaps even have some of my own ideas challenged. Funnily enough you don't tend to get that if you only ever talk to people who agree with you completely! @Crane: Thanks for your explanation. I used to use Evernote 2 as well, although less than I use Evernote now. I suppose I always thought of the categories as being like tags... but then I don't make much distinction between the idea of tags and folders anyway, to me they are just different metaphors for categorising things. In "real life" I'm forced to use physical location (folders, notebooks, shelves etc) as the main means of categorising things, which is rather restrictive since an item can only be in one place at a time, whereas in Evernote something can be in many places at once (using tags). I'd just have a tag for "Research Problem X", although I completely agree that it would be better if you could automatically apply selected tags to new notes, as you can with notebooks. It would make the workflow just that little bit smoother when you're working on a project. It can get rather tedious to repeatedly type in the same tags (although I have a habit of having a text file permanently open on my PC which I sometimes use as a kind of clipboard for things like that, but it would be nice if I didn't have to!)