Rated 4 out of 5 stars

Excellent addon except when saving a new layout will only accept alpha, numeric, and the underline (_) characters. It will not accept a space or any other special characters except the underline. This makes for a sloppy-looking entry. Please allow it to at least accept the space and minus (-) characters.

To MaxStirner, you should be able to drag and drop any link into any tab. Maybe this will help in your Google problem.

This review is for a previous version of the add-on (6.2.1-signed). 

Available in version 6.3

Tile Tabs 6.3 has been released and allows spaces and hyphens in layout names, as well as letters, digits and underscores.