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The only way of secure online communication is by using the Cackle.it communication platform which will be launched in September 2013 that provides secure, safe, private and confidential voice, chat, email and browsing experience using the most advanced end to end encryption technology where by no one will intercept your comunication until it reaches the intended reciepient.
You need to have end-to-end encryption on your communications, and no record of the conversation. Oh, and use Tor. Google, Microsoft and Apple all have products that should be fairly secure, such as Skype and Facetime, but nothing is totally secure (see this Slate article), and the headaches of taking many additional steps aren’t likely to appeal to most people.