Rated 3 out of 5 stars

Yes, can afirm that. 4.0.2 dont works with own server.

This review is for a previous version of the add-on (4.0.2). 

Why use this if you've Firefox Sync? Rated 4 out of 5 stars

Because Firefox Sync sucks. Sync often delete Bookmarks and there is no way to configure it to automatically sync on end or start of the browser.

This review is for a previous version of the add-on (3.9.2).