Twitter is apparently taking a harder line on its anti-abuse policy. “Today, as part of our continued efforts to combat abuse, we’re updating the Twitter Rules to clarify what we consider to be abusive behaviour and hateful conduct. The updated language emphasizes that Twitter will not tolerate behavior intended to harass, intimidate, or use fear to silence another user’s voice. As always, we embrace and encourage diverse opinions and beliefs –but we will continue to take action on accounts that cross the line into abuse.” I say “apparently” because Twitter can make rules all day. Enforcing them is another matter.