The main purpose to get the social network is to be able to connect to different people online. They can be in the same room or in the other part of the world still the connection shall be normal and steady. With it you can get to know the people from the other countries and even the continents. The bare fact of interacting with people across the world is amazing itself; still with the help of the social network software the process will be even more exciting.
The best of the abilities in this matter is the option to send messages without revealing the personal information.
This helps to avoid the SPAM in your mailbox. If some of these letters got to your mailbox, use the powerful anti-SPAM filter to get rid of them in the future. Perhaps you will get some messages, but it will be much less of them. Your privacy will be kept on the high level.