Great that you added this functionality, however, it does not work for me. I go to add a social network, select +new social network, select Linkedin and then it tells me that it has to connect with my Linkedin account, i approve, but then I get an error message that says "Could not complete LinkedIn authorization. Please try again."
I have been trying again, quite a lt in fact but you seem to have a bug??

Me too - this would be an incredibly useful tool to be able to track and take part in group discussions on Linkedin from Hootsuite.