Glassboard is a private social network for business, just like a conventional social network, but with the secrets of email and the importance of mobile phones. On the Glassboard, you can create boards with people's interest in general interests and share messages, comments, photos, videos and files.
Each board is like a different group of people, and another group can see other groups until they invite them. All that the group is sharing, can only be seen by its members.
You can invite your friends using a code sent via email or on Twitter, so that all your people can quickly access your board.
The best thing about a glassboard is that you can control what you share and who you share it with. You can create groups for specific purposes and share specific files, for example your family or work group.
Most of the social networks mentioned, you cannot place any type of advertisement on the glossboard.