* Getting correct mobile content vs. engine-specific mobile content vs. overly-dumbed-down mobile content (feature phone content) vs. desktop content which doesn't degrade nicely
* Getting Webkit-specific CSS
** plan to fix -> https://bugzilla.mozilla.org/show_bug.cgi?id=690985
** analysis -> https://bugzilla.mozilla.org/show_bug.cgi?id=708406
We need to continue to have the recently-added feature that allows toggling between mobile and desktop content to help with this kind of testing.