I had a real love affair with Pinterest for one semester. Spammers or not, it is simply too crowded now. Last week, I found Piccsy. I'll be using it now in place of Pinterest until spammers arrive.
That is it. I loved it, I still like it, but with scale comes inevitable problems. Another reason is that I like something niche. At 13M users, it's mainstream and not for me.
You do. I do not have an account yet, but I am already visiting the site a few times daily for refreshment. I plan on emailing info@piccsy and see if i can convince them to give me a few invites. Will def. share then.
EDIT: Email daniel at piccsy dot com. He's the founder.
Try Wookmark. I see it kind of like this: Pinterest:YouTube::Wookmark:Vimeo. It's super clean and easy to use, and it has a paid version where you can save private images and start private groups. http://www.wookmark.com/