Dos and don'ts for mixing work, social networks
"There is increasingly less difference in work life and personal time," Levinson says. "We are coming from a time when there were very clear boundaries. That comes from an older expectation. Work takes place in more places now."
People can use the sites to make new acquaintances outside their departments and groups, and users can extend their networks beyond the traditional workplace, she says in an interview by e-mail. "It's a way to enter new professional galaxies."