habit caused a drop in their grades.]]> benefits to society that these networks may bring.]]> effective, open and creative.]]> believe to be fair.]]> dangers and wasted time cancel out any benefits.]]> lead them to harm.]]> wasted time cancel out any benefits.]]> relied on social media was in the 2008 race between Barack Obama and John McCain.]]> networks.]]> strangers were trying to log into their accounts.]]> bring.]]> nominees relied on social media was in the 2008 race between Barack Obama and John McCain.]]> available 24 hours a day.]]> reported problems.]]> politics.]]>