I"m on it - every day. It's a great place to pin things you like, want to do, or to pin your own things for others to see. Some pins lead you to tutorials of how to do them, some to where you can buy the item you see.
If you see something on the internet or a blog or web site that you like that is a photo you can pin it to your account to one of the boards you have created. Then you can refer back to it, and so can all the other members of Pinterest. You have to have an invitation to be a member. Or you can go on to the site and ask to be a member. If you have someone invite you it's is quicker to become a member.
http://pinterest.com/
If you want an invite send me a PM. I'll need your email to invite you.
Phyllis
QuiltingGrannie