Great job! It's open source and easy to set up with your existing bookmarks folder(s). I really like that there's no signup or extra cloud services needed. It's pretty much the best speed dial available for Firefox.

The only reason that I'm not giving it 5 stars is because there's no way to create new pages w/o completely filling all the grid cells of the previous one. There needs to be page tabs (w/ an add page button), instead of the scrolling pages.