You have to invite them and they can join. BUT the invitation comes from a Social Networking platform, which some corporate environments have blocked across the board. Many companies think Facebooking at work is not a good use of staff time and have blacklisted social networks in general. However, MyCstoreWorld is all about enhancing the effectiveness of your interaction with customers, vendors and colleagues in the industry. MyCstoreWorld benefits companies of all types. So, if your invitees do not join, please send them a personal email and let them know that they should ask their I.T. department to 'whitelist' MyCstoreWorld.com and check their Junk Mail folders. Don't let them miss out on all of the opportunities here!