I guess my request was instrumental. For events in my ancestral town of Castelluccia (changed its name to Castelcivita on 25 January 1864) FamilyTree accepts the place name,
Castelluccia, Principato Citeriore, Two Sicilies
If I type in the name of the town on their web interface, this town name does not appear in the drop-down selection box until I have finished typing in the entire name. When the town name is input with an event in RootsMagic to a person already on FamilyTree, it flags the place name as non-standard. (It was Kingdom of the Two Sicilies around 1816-1859 and I'm not sure the cut-off dates)
This matters because Castelluccia, Principato Citeriore, Two Sicilies is the place name as it was known at the time of the event. If my Pietro Tancredi was born in that place and somebody else searches for Pietro Tancredi with the same place (or its modern equivalent, Castelcivita, Salerno, Campania, Italy) I want them to discover the connecting line so we can compare notes.