RueLue: I think, it would make sens to change the title of the page Recent Changes / Online Go to Recent Changes / Digital World or .../ Mathematical World. It would then show all changes of pages referring to programs, informatics, online-go, game theory/mathematics etc. (.../Online Go would then only be an alias for the new page)

Actually, I think the /OnlineGo and /All subpages should be removed.

They were a simplistic tool, when there was much editing for those types of pages. Nowadays it only leads to confusion. I think that the RC filters can do the job quite nicely, for those users who don't like to see those pages.