I am actively using the GTD system with my PDA & Outlook.
I come to a point these days, that I accumulate a moderate number of NA in my lists, such that it's not as easy to have an overall impression of this "soft-landscape" when I evaluate them from time to time. This makes me struggle to keep my mind from taking the whole thing back into its consciousness.
My point is, I am surely not having as many NA as most of you here (I'm only a student), so you guys must have a perfect strategy for this.
I considered breaking large lists into smaller lists with more refined contexts, so every one of them does not carry so many. But I don't want to have too many lists too (for example, jokingly, breaking @Home into @Toilet, @living room, @kitchen, @bedroom... sounds ridiculous, unless I have a giant house).
I also considered tagging items in big list with prefix like, @Desk, @Meeting etc. It's what I am doing now, but it does not completely solve my problem.
Of course, after all, ultimately I should train myself to have more analytical power so I can sensibly evaluate ~20 items in any given list at a glance.
What do you think?