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He fears this will mean that we don't get to see information that challenges our world view, and will ultimately be bad for democracy - if you're an American in favour of gun control, for instance, you will tend to see information that reflects your views, while members of the National Rifle Association will be served up sites that chime with their stance.

BBC: Are we trapped in our own web bubbles?

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At www.leakedin.org, which was formed to help people whose information was stolen, you can type in various passwords to see if they were compromised.

WSJ: Conquering Retirement: Fix That Password��Now!

What he really wants to do now is get a sense of what is there and to see if that is something - some information that can be given to creditors to say, hey, you know, this is what's going on.

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