I imported my Firefox bookmarks. You've captured all the bookmarks themselves, but you seem to have discarded all other metadata, including (a) the hierarchical structure, and (b) tags and description. This is really unfortunate, particularly because your auto-categorization code seems to show a high degree of .... shall we say, creativity?
It looks like the only way to access this saved stuff is to actually visit your page. There's no way I can access it through the browser itself (as I can with bookmarks today). While you do have a FF extension, it doesn't seem to provide a means of accessing those bookmarks, only a way to add new ones. It may seem petty, but the need to open your web site to access a bookmark is enough extra rigmarole that I'm not going to bother.
As mentioned in another thread yesterday, I'm not going to log in using Facebook. It requires exposing my friends' identities, and I don't feel I have the right to make that choice for them.
For that matter, I'm never, ever, going to choose the option so that my new entries are posted into Facebook. Bookmarks (and other notetaking) is a tool, like turning a screwdriver. While I might post to a social site about the project I'm working on, I don't post about each screw I turn.