The authors offer an answer to the research question, To what extent and in what ways is Twitter helpful to student learning when group hashtags are created and used in collaborative educational environments? Sixty-two students in a spring 2012 graduate online Research Methodology course worked individually and in groups to create discussions on topics of interest through Twitter posts and student-created hashtags. Student participants answered nine qualitative and quantitative questions concerning the Twitter/hashtag exercise and used collaborative blog pages to reflect on their experiences. A grounded theory approach was applied to classify data generated from the nine questions and blog postings. An analysis of the study's data resulted in the discovery of the following four themes: access to information, communication, class engagement, and general feedback. Based on these themes, nine recommendations are offered for maximizing the use of Twitter in an online environment for increased student engagement and learning.