Not long ago, the authors participated in EDUCAUSE 2009 in Denver. Because they were delivering a presentation on instructional uses of Twitter, their ears and eyes were wide open for other presentations mentioning social networking in general and Twitter specifically. At a lively "debate", the negative commentary focused on three things: Twitter takes too much time, the content is of questionable value, and it promotes social (or, anti-social) myopic-ness. The authors do not disagree, but instead have found, as many have, that Twitter's potential as a powerful instructional tool outweighs these negative factors. In this article, the authors share some of the insights gained using Twitter as an instructional tool and explain why they think Twitter, despite its drawbacks (and really the drawbacks of social networking in general), can add value to online and face-to-face university courses. (Contains 5 figures and 48 endnotes.)