Help Desk
http://www.codeproject.com/Articles/733164/How-to-create-HelpDesk-on-SharePoint-Online
Catalog Site but also can be used for …
Job Posting Site
Employee policies and procedures
Location or facilities information such as a meeting room list
Projects and initiatives
Services catalog
Case studies
Knowledgebase articles
http://stevegoodyear.wordpress.com/2013/09/06/creating-a-job-postings-board/
