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Social-networking sites are a great way to keep in touch with people and (1)____make___ new friends. However, by using them, we also unintentionally reveal a lot about (2) sufficiantly personalities. These sites are increasingly (3) yields studied by psychologists to gain insight into people’s personalities.

After years of research (4)_____________ how relationships in real life are formed, psychologists are finding that social-networking sites provide a rich (5)_____________ of useful data. It’s possible to study complex social networks and communication patterns in new (6)_____________.

We no (7)______________ have to rely solely on people reporting how they feel about each other. Messages and images on these sites act as open-ended stimulus that people react to in ways consistent (8)______________ their personalities. Psychologists have found enough evidence to be (9)______________ to confirm that extroverts post (10)______________ messages and photos on social-networking sites than introverts. For example, introverts tend to read messages, but not respond to them. 
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