You’re at a fine establishment which offers delicious, free Wi-Fi in addition to delicious, for-pay food. Perhaps served in bread bowls. But like your soup, the Wi-Fi eventually dries up: Restaurants and coffee shops that want to get customers out so that new ones can come in might boot you off the Wi-Fi automatically after thirty minutes.
But you’re not like other customers! You’re going back up to the line to buy another beverage and perhaps a scone. You deserve to get back on that Wi-Fi, dagnabbit. And there’s a way.
We’ve covered changing your MAC address via Terminal before. But now you know that you can use this trick to get back online at Panera Bread and other establishments with time-limited Wi-Fi.
First, get your current MAC address. You can find it in many places; one such place is System Preferences -> Network -> Wi-Fi -> Hardware tab. But since you’re about …
Source: Mac OSX Hints