Zynga, the company that makes Farmville, is counting on human nature to keep its businesses growing, says Jeff Chester, a consumer privacy advocate.

发明这款游戏的公司，正指望人们爱玩的天性令他们公司蒸蒸日上。杰夫·凯斯特说道，他是一位消费者隐私权益的倡导者。

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"There's a balance here that eBay is going to have to strike, " said Jeff Chester, executive director of the Center for Digital Democracy, an online privacy advocacy group.

WSJ: EBay to Target Under-18 Set

Jeff Chester of the Center for Digital Democracy says these companies are trying to create a science of targeting that learns everything about individuals and manipulates their weaknesses suggesting that the federal government should look at what role such ads played in convincing people to take out mortgages they should not have.

FORBES: Protection of online privacy could prevent another mortgage meltdown?