+O'Reilly Radar often has good stuff, this week there's a webinar on Google+ tricks coming up. I think +Jaana Nyström or +Thomas Morffew may be interested in this – or at least some G+'ers they know!
http://www.oreillynet.com/pub/e/2178?imm_mid=07d856&cmp=em-orm-books-videos-jan30-weeklywebcast
Thanks Sophie.