Helpful tip Rated 5 out of 5 stars
Two years ago it was the best addon for me, but now...when i start use firefox sync, i found out that Speed Dial cant be synchronized too...
May be it could be helpful tip for you project - so, what if you will use firefox build-in synchronization methods? I mean - create, by your speed dial, special folder with Bookmarks (from Speed dial of course) and when user will sync browser, it automatically add speed dial's Bookmarks and everybody be happy :)
Also you can use cripto-algorithms to hide names of bookmarks, or use something else.
It will allow you not to create a special service (web site) to synchronize.
P.S.Sorry for my English.
P.P.S.I'll give your project some donates, when you make sycn :)