For everyone wondering how much you'd need to mine to pay for the equipment, here is a handy calculator: http://www.bitcoinx.com/profit/

The BFL Jalapeño (5GH/s) is $274 and where I live electricity costs $0.19/kWh. From the article, the device "pulled 50 watts of power when actively hashing". So, this will pay off in 3 days, and will generate 9321.64 USD over 3 months (given 0.61 profitability decline per year).