Using GTD systems with Workflowy lists and tagging

Many users utilize tags to label and filter their GTD categories.  Example of #today, #tomorrow, #priority, etc.

Here's how one of our users makes best use of WorkFlowy and integrates it with his daily workload using a GTD system:

http://blog.workflowy.com/post/42846324155/how-i-use-workflowy-andrew-carroll