People surf the Internet during the annual "Campus Party" Internet users' gathering in Sao Paulo in this February 13, 2008 file photo. A new grass-roots movement is underway in which techno geeks, Internet addicts, "crackberry" users and compulsive IMers are deciding to wrest back control of their lives by daring to switch off -- if only for a day. To match feature UNPLUGGED/ REUTERS/Paulo Whitaker/Files (BRAZIL)