Might find the options of some interest.
Another one is Care2.com which respresents nearly 22 Million members with a passion for Healthy Living and average age is 57 and female. www.care2.com
And then we have the Ebook4Good edition which comes with Hangout support here http://bit.ly/SocRespEbook2013
Please consider joining our Google + community for weekly Hangouts4Good http://bit.ly/Ebooks4Good
Have started on this Jungle Tour AdVenture in 2013.