I "heart" Twitter.
With that said, I was a little taken aback by Michael Krigsman's "Twitter Is Dangerous" title of his article when I saw it on Techmeme this morning. I was like HUH? Really now, you aren't going to tell me Al Qaeda is using it to send secret messages are you? Then I read the article.
Michael's definitely got a great point. Fortunately for Twitter, most of it's early adopters have a sense of what is ethical to do and not do when it comes to "tweeting" on Twitter. However, as Twitter's user base grows (it's now over 700,000 users) and enters more into the mainstream, not only is this going to be an issue for IT departments but for Public Relations and Online Marketing Departments as well.
This is the time when you need to add Twitter to your "online communications" policy. Twitter is not like your normal instant messenger like AOL's AIM, Yahoo Instant Messenger or ICQ. Those IM clients are one-to-one communications. With Twitter you can talk to hundreds and possibly thousands of followers with just 1 tweet that's 140 characters long.
Twitter is great when you want to reach the captive masses fast. It can also be a burden if your employees are using Twitter and do not understand the implications of one tweet that leaks vital information. However, this burden is no more dangerous than having an employee hitting "reply all" or posting a blog post about sensitive information. The issue needs to be addressed with company employees about discretion and use of online communication mediums.
Is Twitter really dangerous? Only if you don't plan for and address the key issues your company could potentially have with it. If you don't have an online communications policy in place now, get one and make sure Twitter's added to the mix. If you do have one in place, make sure you add Twitter and notify your employees about the policy changes.