I do not quite understand why the various questions are grouped. Is there really any value in having numerous pages? It would be much more efficient and a better UX if every active question was on the main page. Thy could be grouped into US, World, etc. The way it is now i have found questions by accident that i never knew existed.

Also all the information on the individual question page should be displayed - Buy at values,etc.  

Yes, a dynamic spreadsheet (sort, search, refresh, other stats/links to info) would be excellent.