> Custom Columns (if thats what you mean!) are on the todo list though — I have a couple in my library, one for tracking Read state and another for tracking wor

> Custom Columns (if thats what you mean!) are on the todo list though — I have a couple in my library, one for tracking Read state and another for tracking word count. Yeah, I have a bunch of them, one is "Read Status" (read, reading, to-read), another is "Recommended By" to track books recommended by various people, and the last one is "Folders" which I use to arrange books in a folder-like hierarachy. For example, you could have a "Finance" folder, and then "Finance.Investing", "Finance.Personal Finance", "Finance.Trading" subfolders. The calibre content server does support searching and viewing these columns, and in the desktop app you see the tree on the left pane which you can quickly browse. To search a specific "folder" you'd use something like: #folder:"=Finance.Personal Finance" title:"happy money"