Sims helped organize a robust little community that used PayPal to generate virtual credit card numbers and help each other with different offers.

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MasterCard recently approved two BlackBerry models (one Bold, one Curve) for its PayPass program, meaning the devices can store virtual credit card data in their SIM cards.

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Its Japanese-language counterpart, which currently accepts orders but not online payments, will be relaunched next month as a full-service e-commerce center complete with virtual shopping trolleys and real-time credit-card processing.

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Facebook Security: Users still remain tentative to link credit card information to Facebook, even with virtual currency Facebook Credits.

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It isn't wise to share credit-card or password information with freelance virtual assistants before building a trusting relationship, experts say.

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Virtual accounts need to be funded either via credit transfer, payment card or PayPal and therefore a possibility would be to request this information from credit institutions, card schemes and PayPal.

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But like other social gaming companies, Zynga allows users to speed up the process by converting real dollars from their credit card and PayPal accounts into the FarmVille currency used to buy virtual goods.

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