- Desarrollo de Software en EspaƱol
- Stack Overflow (in French)
- Stack Overflow (in German)
- Stack Overflow (in Bengali)
- Stack Overflow (in Hindi)
- Stack Overflow (in Italian)
- Stack Overflow (in Portuguese) for Portugal
- Stack Overflow (in Turkish)
- Stack Overflow [In Chinese]
As the site topic is the same as StackOverflow, just in a different language, I think it's better situed to call it e.g. es.stackoverflow.com, with it's own meta on meta.es.stackoverflow.com.
Is that suitable for this kind of proposals?
BTW, I'm sure there IS an audience to es.superuser.com and es.serverfault.com also, but let's go step by step. Maybe this is not suitable for every language, but I think half a dozen or so will be very succesfull sites (I bet a beer on that), including es (Spanish), ru (Russian) and maybe de (German).