Christmas is over. It's back to blogging. One of the announcements Microsoft hoped to bury during the holiday lull period was its long-expected decision to pull away from its partnership with NBC. Microsoft and NBC are dissolving their partnership involving the cable news channel, but maintain their 50-50 ownership of the MSNBC Web site. "We are totally committed to taking MSNBC.com to even higher levels of success through our unparalleled marriage of technological innovation and news content," Bruce Jaffe, a Microsoft vice president, said in a written statement.