As Hurricane Sandy makes its way up the Eastern Seaboard, many are without electricity. Without power you could lose your access to Internet via Wi-Fi and, potentially, access to mobile networks. If that happens, how can you still post on Facebook and Twitter to let your friends and family know that everything is fine? Or ask for help? You can use good-old text messages. To tweet, first you need to enable your mobile phone on Twitter.com, so do it now while you can. Go to your Twitter homepage, then to…
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