I use Xfce4-terminal as a 'text editor'. By setting the default MiscHighlightUrls=TRUE, it is effectively impossible to highlight and copy a URL off the text page into the text buffer.

Attempted to locate ~/.config/xfce4/terminal and did not find 'terminal' at all, hence no 'terminalrc'. 
Created 'terminal' directory, created 'terminalrc', entered:

[Configuration]
MiscHighlightUrls=FALSE

save, exit, reload... 
...loaded test file containing URL, terminal program still insisting on treating it as a link.

Some browsers won't allow you to make a text-cut/copy of a URL. Instead, you get a buffer with the href object contents, which isn't always the goal.
I use an XTERM terminal window as a way of accessing raw text from a web-page. This feature makes that impossible. 
Why not just allow the user to turn it on/off in the advanced section, and default to 'off'?

I'm a big fan of XFCE, excellent in so many ways. 

That said, when someone comes up with a new feature, and they think: 'all the users are going to love this when they see it...'
...its amateurish, and it violates a basic principle of software development: "Don't break it without warning the existing base of users." 
(Instead, feature it in "what's new with this release...", and let users decide if they want to use it.) 

Thanks for the great work you folks have done with/for Xubuntu. Don't know, but my impression is many Ubuntu users are adopting it.