Where centrally store bookmarks?
On my personal server. Write a simple extension that when manipulation of the bookmark will send all on the server. So the same periodically checks the update server, downloads and sinhroniziruete. Difficulty may arise in the inability to program.
Another option is to look for here is
an extension that will save on your server and is not synchronized to the vault.
Another option to try several uchetok in chrome, there is. That has bookmarks, you probably need to switch between users, and may not, not tested.