New underwater photography site

Hi photographers,

I'd like to let you all know about a new photography site I have created specially for underwater photographers.

http://www.oceandiscover.com

It allows the photographer to create pinboards to showcase their photos, share photos via social networks, leave comments for other photographers on any photo, and pin any photo they like from other pinboards or websites onto your pinboards.

Please enjoy the site, it's a visual feast of underwater photography!

Cheers,

Graham

How do Photographers stop their images being pinned without permission by someone else to this site?