On Meta Stack Exchange, there are two tags, anonymous and anonymous-visitors. These two tags are synonyms since the tag wiki of anonymous says "This tag is for questions regarding anonymous users". The anonymous-visitors tag, on the other hand, doesn't have any tag wiki, but I think that regarding its name it's fairly obvious that that tag is also about anonymous users.
I think that we should keep anonymous-visitors because although it's less popular than anonymous, its name is less ambiguous. I've seen several cases where anonymous was used in questions about the fact that voting is anonymous that have nothing to anonymous users. Here are a few examples:
- Is downvoting perfectly anonymous?
- Anonymity of downvotes has a loophole
- Communicate with Anonymous Voters
I therefore suggest that all questions about anonymous users that are tagged anonymous should be retagged to anonymous-visitors (I personally think that it would have been better to call it anonymous-users but since we already have anonymous-visitors we might as well use it). The anonymous tag could be made a synonym of anonymous-visitors or simply burninated. If anonymous becomes a synonym of anonymous-visitors, questions tagged anonymous that aren't about anonymous users could be retagged manually (this shouldn't be too difficult since anonymous only has 65 questions).