I've been using @home and @work lists to keep my private and work-related tasks separate, and an additional @anywhere list for stuff that I can/want to do at either place. But since I'm using lots of tags to denote projects and contexts, my task cloud became a bit big. And I kept seeing all my home-tags even when trying to concentrate on the @work-list.

So I set up 2 additional RTM-accounts, one for home tasks and one for work tasks. I'm sharing my @home and @anywhere lists with the home-account, and the @work and @anywhere with the work-account. Now my task cloud stays within manageable proportions, and I have a much better separation of private and work-related tasks. I don't see my private tags when I'm at work and vice-versa, so I can concentrate better on whatever I'm supposed to be concentrating at.