Collaboration is, in fact, the proper use of SharePoint.
So, what exactly is Collaboration?
This link from Microsoft explains it all.
The following are most commonly used by customers:
- Real-time presence and communication
- People and Groups lists
- E-mail integration
- Task coordination
- Document collaboration
- Issue Tracking
PS: Personally, I see no point in having Wikis and Blogs. I seldom push these 2 features.