I created an ACS Green ICT Group on LinkedIn. I am still coming to grips with how such social networking tools can be used professionally and thought the best way to find out was to try them.
To create the group I entered a short description, uploaded the ACS logo and put in a link to the Green ICT website. The next day this had been approved by LinkedIn and the group created. Now people can apply to join the group (I get to vet them). Be interesting to see if anyone joins.