Twitter creator Jack Dorsey Wednesday gave the first public demonstration of his hotly-anticipated latest venture -- a device to allow credit card payments by cell phone -- and revealed it would be given away for free.
How fake sites trick search engines to hit the top
Even search engines can get suckered by Internet scams. With a little sleight of hand, con artists can dupe them into giving top billing to fraudulent Web sites that prey on consumers, making unwitting accomplices of companies such as Google, Yahoo and Microsoft.
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