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).
The timing of when you get the device is crucial, check out how fast the total power of the mining network is going up: http://bitcoin.sipa.be/ (it is the 1st graph).
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).