Unplug home applainces during a heavy thunderstorm?

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Here at my place most of us unplug our electrical applainces after switching them off during a heavy thunderstorm, we also avoid the phones and remove the cable from the television and remove the internet cable...i have heard that people have died talking on landline phone before when a huge thunder crashed and also that it can sometimes damage your applainces if running... do you feel the need to do that?