>>The problem here is that there is no lookup or validation table for cities - can't be, too many cities, towns, or villages all over the world - and the user can write anything. Michel could merge that information, and it might indeed be a good idea to do so. But new members will continue to write just about anything (others
>might write "S.P.", "S.P", "SP", "S.Paulo", or "S. Paulo" for example).
>
>We have something for that. When you see something like that, simply forward me the information about the possiblities and we will enter that into our city matches. Basically, on new upcoming accounts or existing ones, when an update is made, it will be readjusted automatically. This also implies that when we add new similar matches, that all actual data is also corrected. So, basically, for this one, what would be the most common ways that users from there are entering that city?

I would go with what Tony indicated in his message even if the number is a bit less.