Dudenhoffer, C. (2012) "Pin it! Pinterest as a library marketing and information literacy tool." College and Research Libraries News, 73 (6), 328-332. Talks about use of Pinterest by the library at Central Methodist University (USA) and also more genrally how it can be used in teaching. http://crln.acrl.org/content/73/6/328.full I found the Pinterest of their careers centre here: http://pinterest.com/cmucareercenter/
Photo by Sheila Webber: photoshopped picture of the Queen's Jubilee celebration edition of Marmite (for non-Brits, "Ma'am" is what you are supposed to call the queen).