I'm freaking out over Gimme Bar, the "ultimate scrapbook"! Similar to Pinterest, except you can keep your images private.
I love when you wish for something and it just magically lands in your lap. For free, and via twitter no less (-- Thanks Sarah Jane!) Now I can easily save and organize images I want to reference later for illustration and design projects.
It's still in Beta, so you have to be invited. Ask for an invite on their site.-- I got mine in under an hour!