Why facebook is bad?
Connect with friends and family. People who live in different countries or different cities can communicate and keep in touch much easier than ever before. The methods of which you can interact are numerous: direct messaging, wall posts, picture and video uploads.
Relationship problems. So many people post their lives on Facebook it goes on display for the whole world. This obviously creates lots of problems in relationships with issues such as insecurity, trust, jealousy. Add the misinterpretation that occurs with things written on the internet the problems become ten times worse.