According to various online reports, Nike has dumped ad agency Crispin Porter + Bogusky after a brief 13-month relationship. According to AdvertisingAge, “Nike is shifting its running-shoe and Nike-Plus business back to lead agency Wieden & Kennedy.” While this won’t make much practical difference to us in the short term, the single most interesting item about this is that Crispin Porter was apparently working on the Nike+ website. I’ve stated before the Nike+ site is prettier than it is functional, and an interview with Nike’s Chris Shimojima seems to point at some coming changes to the site. I’m hoping that dumping Crispin for Wieden may help speed that process a bit.