What this means, basically, is that taxpayers who have a credit card merchant account, Paypal account or similar account and otherwise meet the criteria will receive form 1099-K from their service provider at the end of the year.

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In the case of Visa and MasterCard (nyse: MA - news - people ), when a credit card is swiped, the transaction gets relayed--via an intermediary--to the credit card company, which then sluices the funds to the merchant's bank account.

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With Amex-Foursquare, you link your credit card to your Foursquare account and then check in using Foursquare at a designated merchant and get a discount or rebate applied to your card.

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