Hi Faundy.
When you get an account on the forum, you are automatically given a "hand drawn" avatar, as you say.
You do not have a choice as to what it is.
It isnt too complicated to have your own choice afterwards, though some dont want to be bothered or are maybe not sure how to.
1. you open an account at gravatar.com
2. you give them an e-mail address and
3. you choise and upload the photo you wish to use as your avatar.
4. Every site where you have an account using the e-mail address given to gravatar.com will show the avatar that you have chosen.
I guess that in 2006 when you joined, it wasn't the same?