1 Subjects: “...social network analysis...”

2 Subjects: “...social networking...”

3 Subjects: “...social network...”

4 Subjects: “...social networking satisfaction...”

5 Subjects: “...research focused social network...”

6 Subjects: “...social networks...”

7 Subjects: “...social network services...”

8 Subjects: “...online social networks...”

9 “..., and social network data) ask for new methods and solutions for data processing, information extraction...”

10 “... has considerably changed, not only due to a new technologic environment-plenty of social networks...”