If you have really liked the idea of Xmarks - but disappointed that support stopped short of Google Chrome - well this might improve your day.
Now Xmarks – http://www.xmarks.com/ works with
IE, Firefox, Safari and Google Chrome.
https://chrome.google.com/extensions/detail/ajpgkpeckebdhofmmjfgcjjiiejpodla
...now only if Xmarks supported K-Meleon :P