Final answer:
The main disagreement lies in whether social networking sites are more beneficial for fostering connections (Viewpoint 1) or if they pose significant risks and negative consequences (Viewpoint 2), leading to a synthesized conclusion that acknowledges a dual impact on social interactions.
Step-by-step explanation:
The point of disagreement between the two viewpoints provided in the passage centers around the impact of online social networking sites. Viewpoint 1 sees social networking sites as beneficial for fostering connections and maintaining relationships, regardless of geographical distance, as they enhance the ability to communicate and interact online with friends and family. In contrast, Viewpoint 2 highlights the potential negative consequences, such as the risks of misrepresentation and adverse effects on attention spans and social behavior among young people, as well as the dangers associated with online misrepresentation.
A sentence that synthesizes this information could be: While online social networking sites indeed offer a platform for maintaining relationships and expressing oneself, they also bring with them concerns about the psychological impact on users and the potential for deceptive online personas, reflecting a complex impact on modern social interactions.