In a welcome about-face Tuesday morning, Twitter restored the account of journalist Guy Adams, who posted a series of critical comments about NBC's handling of the Olympics. While it's encouraging to hear NBC backed away - even if it required an enormous online backlash - it remains disturbing that Twitter revoked the account in the first place. Let's be perfectly clear: Twitter suspended a user for committing an act of journalism. The mind-boggling move undermines the San Francisco startup's credibility as a supposed advocate of open communications, and whittles away the goodwill of professional and citizen journalists who are the lifeblood of the service. In a series of tweets in recent days, Adams colorfully assailed, among other things, NBC's ridiculous decision to force West Coast viewers to watch the Olympics on a time delay, presumably so the network could charge prime-time advertising rates. It's been an infuriating experience for fans who can't duck the spoilers blasting at them from all quarters of the Internet. Adams, a correspondent for London's Independent newspaper, simply supplied them an appropriate outlet for those frustrations in the tweet that supposedly got his account deactivated.