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@andyraisbeck: That was only a question for clarification and did not mean anything else.
Apart from that: Sync is being tested internally since some time but there are still some problems to solve. It is not as straightforward with Vivaldi's additional stuff as it would be with Chrom(e|ium)'s stuff alone. They have to build the necessary infrastructure, to make really sure that it is only you who is syncing your data and that there is no data loss. We all want this done right the first time, right?