"The fandom/character/friendship/pairing/rivalry/triangle I want isn't listed. What do I do?"
Don't worry! The subjects already listed are from my own collection of movies and whatnot. The more people join, the more subjects that will be listed. All you have to do is fill out the join forms you want, and the information you give me will be what I need to update the categories and subcategories so that I can list you properly.
"I want to put the code on my FanFiction.Net profile, but it's coming out wrong!"
Because you've copied raw HTML for the code, you will have to switch from the Simple/Rich Text Editor that FF.Net provides as default, to the "HTML Editor". Past the code there and it will show it properly.
If you wish to also add spaces between any previous text and the code, just add "<br />" (a break/linebreak tag) as many times as you need before saving the revisions and switching back to the Simple/Rich Text Editor.