I have signed up for Pinterest but haven’t used it yet. This article interested me because it talks about design and I like the ‘post it’ style. I tried to do something similar with a work Tumblr page but it didn’t work through an iFrame.
Anyway… Pinterest came up at newsrewired as Liz Heron of the New York Times mentioned it as a social network with potential.

Even if you haven’t ever visited popular visual bookmarking site Pinterest, you might recognize its design elements — which have been popping up everywhere since the startup burst onto the mainstream scene in 2011. The site doesn’t use traditional web building blocks.