During and after the earthquake and tsunami disaster in Japan this Friday, local phone networks became overloaded. Not just because of damage to infrastructure, but mainly because the networks simply couldn’t handle the flood of calls and text messages that followed.
This kind of overload is basically what happens around midnight at New Year’s Eve, only much worse, because everyone was worried about family and friends and wanted information as soon as possible.
Internet connections, however, continued to work for the most part, so people turned to social media instead.