Works like a charm, between Chrome, FF, and Opera. And between multiple OS Linux and Windows. I was also an old xmarks user and was looking for a replacement for it as it is going to be shut down on May 1. Such a life saver! The only shortcoming is the synchronization interval, which in my opinion should be whenever a bookmark is added/deleted/updated, not 30 mins. But this is nothing to complain over. Perhaps add this as a PRO feature with money?

The other thing is, the EverSync options page consumes CPU like crazy. My Firefox gets 50% CPU usage when this page is open. When I close it, it is gone. Improvement needed.