How to recover wifi passwords?

Until recently, I would have said "no, it's stored in an encrypted fashion", but in fact I was poking around on my Mac a while back and found that, yes, you can indeed recover ostensibly hidden password information from wifi networks on your Mac.

Here's how ya do it in Leopard...

Open up Apple --> System Preferences... --> Network, and click on "Airport" then "Advanced...":

Once you click on that, you'll now see a list of all the networks to which you've connected:

I'll show you the password to "Aerie" here. It's easy, too: double-click on the network name then click on "Show password" and, voila! There it is:

There is a nuance to this, however. Not exactly sure why, but sometimes you click on "Show password" and it shows you asterisks, while other times it'll show you the password, as demonstrated. Ah well, it's better than nothing, right?

Hope that helps you out!