This question has a Best Answer.
Go to Best Answer
you will get an e-mail tonight or tomorrow so keep checking
or go to my giffgaff and choose on the left or click my payback
Click on My payback under My giffgaff and follow the steps.
You can select the options on My giffgaff page. Edited
you just participate in the forums helping people and recruit people as well
if you want to turn it into airtime credit you dont need to do anything, that happens by default
for a micro sim go to http://apps.giffgaff.com/microgaff/directrequest.php?r=chubuking