Quote Originally Posted by treelike View Post
You should only have one next action list, comprising next actions for all your projects.
At the risk of splitting hairs, you would have multiple next action lists, sorted by context (e.g. @computer example given by mcogilvie above)... they would be comprised of project-associated and discrete next actions (in other words, some next actions you have are just next actions - like "pick up dry cleaning")...