I can really get behind this ban.  It disgusts me to see people smoking at playgrounds, and I've literally had to leave before because people were blowing smoke everywhere and I didn't want my children breathing it.  It is just ridiculous.  You can't tell me it's not harmful for a child to run through a cloud of smoke.  On the same token, I thought the argument that it was setting a bad example was stupid.  Yes, it does set a bad example, but we can't just purge society of every bad example in an effort to protect people from life.  It's up to parents to teach their kids right and wrong.