Daylight Saving Time 2013: What time do we change our clocks to spring forward?

Friendly reminder: Daylight Saving Time 2013 begins 2 a.m. Sunday, March 10. You'll set your clocks ahead an hour.

What's the purpose of Daylight Saving Time? "Many people believe that DST could be linked to fewer road accidents and injuries. The extra hour of daylight in the evening is said to give children more social time and can boost the tourism industry because it increases the amount of outdoor activities. DST is also used to save energy and reduce artificial light needed during the evening hours," according to the website timeanddate.com.

We're curious: Amid the prevalence of cell phones and computers, is the idea of physically setting your clock an antiquated notion? How many of your clocks will not automatically change when DST kicks in?