I've noticed that we as a site seem to be prone to tag duplication, moreso than many other sites; sometimes this is just a case of a simple typo (and let's be honest here, there are a lot of typos on this site), but more often than not it seems to be a result of variations in transliteration. A few examples, from looking through the current tag synonym list:
- muharram <- moharam
- madhhab <- madhab
- wudu <- wudhu
- dhabihah <- zabihah
- shaitan <- shaytan
- ramadan <- ramadhan
This is hardly a complete list — I'm sure there are some that haven't even been caught and added to the synonyms list yet — but the problem is fairly consistent: Tags end up split based on minor changes to transliteration, which semi-regularly requires cleanup otherwise it breaks categorization (which pretty much eliminates the whole point of tags in the first place).
In many (most) of these cases, the regular auto-complete list would pull up the correct tag; however, for whatever reason, not everybody uses the auto-complete list. And unfortunately, when a new tag is created, future users who do use the auto-complete list are now stuck choosing between two tags that quite literally mean the exact same thing.
According to M.SO (see: Warning or confirmation on new tag creation), there is a feature which can be enabled which would warn users via popup that they're creating a new tag (whether intentionally or by accident); I feel that enabling this warning on our site would encourage users to use existing tags and reduce the necessary cleanup and confusion that mistagging can cause.
Do we want such a feature here?