Further to my updates here, work has now started on rewriting the main imutual site, and improved social media integration is one of the objectives
Of course, this will take a while (months rather than weeks) and we could do tactical things in the meantime. However, we did make extensive use of twitter in imutual's early years and the stats showed that this added literally nothing to the bottom line

What's also clear from the past is that our "product" isn't right; that is, the site is very poor at converting visitors to active users and we need to address that first before committing precious resources to social media campaigns or trying to form promotional partnerships. Fix the hole in the bucket rather than just trying to pour in more water
That said, by far the most effective form of social media promotion is for individual members to tell their 'networks' about imutual and why they use it. And there's nothing to stop you doing that right now
