"One time I completely forgot about my homework  - and neglected my chores -  because I was at a friend's house for the entire weekend," says 18-year-old Zachary, from the United States.
"Ngesinye isikhathi ngakhohlwa nyá ukwenza umsebenzi wesikole - futhi ngangayenza nemisebenzi yami yasekhaya - ngoba ngangivakashele umngane wami impelasonto yonke," kusho uZachary wase-United States oneminyaka engu-18.