Welcome to the Denver Business Journal's Tech Watch, our roundup of the weekend's tech news from around the nation, featuring reports on Google, Apple, Amazon.com, Microsoft, Barnes & Noble, Hulu, ESPN, Research in Motion, Taser and more. Top of the List: Denver-area telecoms Google invites hint at music launch Update didn't fix all iPhone, iPad battery issues Slideshow: Kindle Fire, Nook Tablet, iPad compared Amazon offering Hulu, ESPN, newspapers, mags through Kindle Fire Microsoft teams up with Labor Department to help veterans Google drops support for BlackBerry app ‘60 Minutes,' 'Nightline' doing stories on police use of Taser stun guns Social Media: A how-to guide for local businesses