Benefits of image sharing are:
1. Increased search results.
2. Increase click-through rate.
3. Reach people in less time.
4. Make text or information stand out.
5. Humanize your business.
6. Showcase products and/or services.
Tagging photos that you've uploaded to a photo sharing site means your photos will have much better visibility, and will also be likely to generate more user comments and constructive criticism of your work.