Looks interesting but seems to be getting abandoned unfortunately.
What I enjoy about floccus is that there is no additional app to interact with; you just save book marks as you normally would in any browser and it auto syncs the structure of your bookmarks to other browsers, so it is always easy and familiar to get to.
There goes the argument of non technical users falling for scams. The tables have turned!
I do wonder if this would be negated by containered applications