I have been seeing these avatar on my thai friends’ Facebook walls lately. At first don’t know where they get and how they made it. I didn’t have a chance to ask them too. Difficult to search in Google using (.com) US. Then I switched back to google.co.th and made some searches and found it.
It is DTAC one DIY, a Facebook flash application let you to choose face, hair, shirt, etc of your choice and create avatar for your Facebook profile and save photos as your Facebook photos album.
To create DTAC one DIY, just go to http://apps.facebook.com/dtaconediy