Alright I fixed it. If you put nothing on the mc.net username box, you will get no avatar and if you put steve as your username, Steve will be your avatar. These are more options to ppl who dont have mc.net accounts or is playing classic.
Yes sir, every time the image is viewed, It grabs your skin from minecraft's amazon cloud base. So basically if you change your skin and refresh the page you are on, it will put your new skin :biggrin.gif:. No need to update any code unless you want a new font, text, or background!
Im gonna work on color support this weekend. It will require you to regenerate your signature if you want color support but you can keep your old ones still if you feel color is unneeded. Favorite block as avatar might be implemented. Depends on my mood. :biggrin.gif: