What should be the standard spelling for tags where the American and British spellings differ?
For instance: https://android.stackexchange.com/questions/tagged/synchronisation
I expect "synchronization" to appear any time.
Obviously synonyms can take care of the fragmentation, but one has to "win". It seems to me that mixing the two will be too dissonant.
(I also see that "sync" is out there too. That will need to be synonymized.)