I think tabliss is really dope. I was really wowed when I first installed it and I was really impressed with how simple (and free) everything was. That was until I closed my browser and all my settings were wiped. Next time I open firefox, all my links and customisations were gone. I assumed it was a glitch, and put them in again. Close the browser, gone once more. After it happened the third time, I stopped trying to fix it and let the default settings become my norm. I now use a different "new tab" add-on and I'm seeing how that goes. It's unfortunate because I prefer tabliss to that one, but if my widgets are going to be forgotten each time I close firefox, then I don't feel like it's worth keeping installed.