FinderPop uses alphabetical ordering when adding items in folders to menus (i.e., the same ordering used by the Finder when you view by name).
Any item inside the “FinderPop Items” folder whose name ends in "-***" is considered to be a menu dividing line, following the convention set by James Walker's OtherMenu INIT. Extending that convention somewhat, any folder (or alias to one) whose name ends in "-!!X" will not be expanded (i.e., there will be no submenu hanging off it.) The name displayed in the menu will not have the "-!!X" suffix, so the FinderPop menu is aesthetically pleasing (even if, like so much else, the underlying organisation isn’t.)
Additionally, any item ending in "^Fexpand" toggles folder expansion for all succeeding folders (sorted by name) in the current folder.
You can have even more control over the cosmetics of ordering by inserting an ordering prefix before the item’s name in the Finder. This ordering prefix consists of three characters at the start of an item’s name, of the form '0'…'z','0'…'z',')'. This prefix will not appear in the menu. For example, my “FinderPop Items Folder” looks like the following:
 
and the FinderPop menu is looks like the example; note that it doesn’t display the ordering prefixes, and that the ‘zz)Folders’ item comes last. It means you may have more one-time work to do setting up your ordering, but it’s eminently configurable!
