HINT: How did Randy add all those groups? He right-clicked on each of the icons under the Additional Information section of a profile and selected "Open in new tab" or "Open in new window" then simply accepted the invitation to each of those groups :)
Want more groups? You can find a comprehensive list here: http://mylinkgroups.com/ and a bunch more LinkedIn resources here: http://jobmachine.net/sourcer/communities/linkedin



