You might have missed the news this summer, but the WNBA for the first time allowed teams to have game jersey sponsors. The Phoenix Mercury wore jerseys featuring the logo for LifeLock, an identity theft prevention company, while the Los Angeles Sparks wore jerseys sponsored by Farmers Insurance.    The NBA hasn't gone as far yet, but this season teams can start selling practice jersey sponsorships. So far, two teams have taken advantage. The Nets will pra...