1-same client, different servers (as far as i know)
2-30x
3-the client is english(when you patch it..don't worry.patches are somewhere)
4-enough players who can spak english. wird that those "chinese" private servers only have english players ^^
5-

for swsro1,

for swsro2 server
6 - servers are off and nobody knows exactly what is going on. but the server is/was real!
7-nope. no other p-servers