Using Labels Across Several Applications to be Displayed on One Page

michael-r - You can start here, and then for creating a custom page, this post will help you. 

To display the latest discussions, use this call /categories/id/[id]/posts/recent

more info regarding the APIs can be found here 

For solutions: http://community.lithium.com/community-name/restapi/vc/solutions/recent

For the Knowledgebase, here are the APIs.