Willow Smith&amp;#8217;s new &amp;#8220;21st Century Girl&amp;#8221; video premiered Monday, and here&amp;#8217;s the positive: The song is nowhere near as annoying as her previous caterwauls about whipping her hair back and forth. Improvement is key, right? But here&amp;#8217;s the negative: Until Smith calls herself &amp;#8220;the type of chick that likes to rock the beat,&amp;#8221; I would [...]