This Ruby Gem uses Capybara and PhantomJS to create an API for gathering Pinterest pins. The library may run slowly because Capybara must parse the page. This is an unofficial library authored by Mika Kalathil and offered under an MIT license.
Google announced Friend Connect today, a new service that will allow any web site to enable social networking features for their visitors. And the key piece of the strategy is that to do so only takes a few lines code, similar to the ease with which AdSense ads can be to any web page.