Have this on Chrome and now Firefox...Cool!

Some tips:

Make this the default page when you start Firefox
1. Open Firefox-Open Speed Dial 2 tab page-Close all other tabs
2. Options-Homepage-Use Current Page-Should look like "moz-extension://80fe3a32-e8a9-4b55-9a19-05f9719372e9/newtab.html"
3. Close Firefox-Open Firfeox-Speed Dial 2 should be your new start page

Save-Import Settings:
1. Open Speed Dial 2 tab page-Click on Three Hamburger menu on the upper right
2. More Options-Import/Export-Export settings
3. Copy all and paste in a txt file-Save file
4. When wanting to restore settings repeat 1-2, instead Export click Import settings-Copy and Paste from saved txt file.
5. Can be used for Save-Import both in Firefox and Chrome