other useful sites on net

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i want to know the other useful sites on the net .that are useful . & also like to know the new site as well as funy also ...remember guyes i havent used the word earning so dont give the sites which for the earning.ya also want to know the sites which acts like the paypal is there any other site which dont require the pan no. i dont have the pan no so pls give this info also .thanx ..