title_body: Is it better to let a footnote link wrap to the next line or force it to remain with the last word block it references?
upvoted_answer: I'm somewhat mystified that the reading system would put the footnote on the next line. Are you sure that in the HTML source  there is no random space (or extra character) between the last word of the sentence, the period, and the number reference in brackets?  One might expect these characters to run after another without spaces regardless of which line it appears on.  
  
  My preference would be not to hard code wrapping/justification defaults in the element (P? LI? etc)  and just let the reading system (and the reader) do it. Or maybe specify a default for body text? For one thing, this becomes less of an issue when displays are wider and reading systems become more powerful. You don't want your publisher css to depend on the user turning justification on or off.  If the user perceives that justification is impeding the ability to read the text, they can usually turn it off on settings. Handling of justification on reading systems will only improve over time. 
  
  I'd be curious what screen dimensions this issue is happening in. This is an anomaly that I personally am fine with mobile phone users experiencing if width is 600 or less.