Um, no you don't? It doesn't involve hacking. You just have to know where to look, that's all. It's out in the open, you just have to look carefully.
Right, this is not a hack. We are just looking at something that anyone with just a little knowledge of websites can look at. A hack would be figuring out how to mess with your avatar and make it transparent...
http://mln.lego.com/en-us/publicview/kamimura521.aspxThat is a hack and I wouldn't recommend trying it if you like your account. I am actually surprised that account hasn't been shut down yet.
XML is just a plain text series of attributes for any type of program to look at. It can be on the web or any number of other programs your computer might use. In this case the XML isn't editable, at least not in any way I have figured out, it is just like looking at a plain text web page that you can't manipulate. I know a fair amount about websites and looking at the XML in this way is not a hack or dangerous.
I have seen how you do what kamimura521 did and it is not the same thing at all.
