Hierarchical tags done the wrong way. Tagging with a child tag must imply tagging with parent tag, otherwise it's just nonsense. This concept feels so natural to me so that I just can't image how woul...

I use it for programming. It's a good out-of-the-box solution, though I can't help feeling I have to actually strip its functionality to what I need, contrary to building stuff up with vanilla emacs. ...