Goes from great to unstable Puntuado con 2 de 5 estrellas
I wish I could find something better. When Xmarks works, it's great: it gives good control over the backup and distribution of your bookmarks.
When it's bad, it corrupts your bookmark database. Then one is forced to overwrite the set in the cloud or overwrite the local version. Either one loses the last n days worth of saved bookmarks.
I ALWAYS do a Firefox local backup of the bookmarks before I invoke Xmarks. ALWAYS. You should too.
The company does offer a variety of Knowledgebase articles on how to fix problems, but the answers are either: destroy your local set or destroy the cloud set. In short, either way you will feel pain.