Which should be used for which?

Business:
1. Facebook: Used to be geared towards personal but now it is a great way for businesses to be able to have a two way communication relationship with their customers.
2. LinkedIn: this is a great tool to find jobs, employees, and to get connected with other professionals.

Personal
1. Pinterest: Visual bookmarks what a great idea! At first I didn't get what all the fuss was about until I really immersed myself into it. Now I visit it everyday and find new DIY projects and design inspirations that normally I wouldn't have access to.
2. flickr: Great way to share images with family and friends.
3. Instagram: Take pictures of the world around you and share with friends, family, and your followers.