a) Using SBI, are the tools restricted to only one domain name which you have registered or it is useable for other sites that you own?

c) What is so unique about SBI that I cannot find in some (free) tools like web ceo? Their version seem to also have the keyword search (brainstrom, daily world search and competition etc), promote site (submit url etc) ... I have no affiliation to them at all but I just did a search on free keyword search and found this as an example.

Thanks for any advice.

Seb