Pintrest from a photojournalist's view

There are concerns about the legalities and copyright issuesof being pinned. My question, is it that different from sharing these links onother social media sites? The same type of sharing information and interests isinvolved. Only Pintrest simplifies it by using photographs to catch the eye notjust a snappy title.
Pintrest is the latest 'in place' on the web, it is awebsite which totes itself as an electronic pin board. A user creates boards onwhich they show off their interests in...