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With 26 questions tagged accounts, 19 questions tagged users and 4 questions tagged users+accounts it is unclear to me when to use which.
Should these two tags be merged? Or, if not, how should their tag-wikis be updated, so their use cases would be distinct and clear.
accounts should be for questions involving services that offer accounts, such as iTunes.
users should be for questions involving user accounts, such as those on OS X.
As neither has a wiki, it's unsurprising that people have gotten confused. It's cleanup time!