How to get free wireless at any airport

So I’m sitting in the US Airways (I know I know) terminal at LaGuardia right now. And guess how I got online? Yep, I paid $7.95 to a company called Boingo, which supplies the wireless connection.

But now that I’m online, I just found a great little trick that lets you save that $7.95 and get free wireless Internet at any airport. Here’s all you have to do:

Add “?.jpg” after any website address. That’s it. For instance, if you want Google, just type in