Cymboa

Excellent database of sports content, within which you upload your photos, videos and create groups. I found it had most sports, teams, players, competitions and categories. It is recently launched so content is still building, but i found the load feature really powerful as it simplifies tagging content.

Also, the Circles feature is really cool. It is a typical groups content, where there is discussion, inviting friends, adding photos and videos, etc

The site seems to combing social media and social networking, although the social networking seems to be powerful more in the Circles section.

All in all a very good sports site.