@Pupi1985
1 the main reason I need API is to hire someone to wire a web service for me that users could created their own private sub QA forum.
2 I am not fully aware of server changes. I know that the feature C that i mentioned above will lead to creation of additional tables (forums table, a user can be a member of multiple forums) and a coupe of columns to be added to the existing tables, a new page for creation of some forums by users with special right of forum creation.
That's basically all