Do insurance advisers use social media networks? Yes, they do. In the US this has been adopted faster than it has here, so this survey data is like a look into the near future as more of our advisers follow their clients online.
Which social networks are most useful? LinkedIn appears to be the winner for business-to-business relationships but Facebook leads for developing new clients and enhancing existing client relationships - usually because that is a network which will be shared by family.
More data here: Link.