Get free android app daily from amazon.. Legally, of course.
Just follow these steps:

Step 1 - create an amazon account using any US address and phone number
Step 2 - set the address as account’s 1-click default address
Step 3 - use test credit card number from paypal as your payment method
Step 4 - download and install Amazon Appstore for android
Step 5 - start downloading your daily free apps

*** you can get Amazon Free App Reminder, a nice daily reminder to remind you free app of the day that you are going to miss if you don't get an amazon account today. Get this reminder from android market for 70 euro cent, or for free from its developer at xda developers forum.

Enjoy!!!