Museums continue to invest in and experiment with internet technologies and increasingly with social software environments (i.e., social networking). These technologies have the potential to lead to a number of important intellectual and social outcomes such as learning, community building, and greater public understanding of, in our case, science. It is the possibility of supporting learning in digital environments that is the focus of this research project. In our previous work, online facilitation has emerged as a big deal and perhaps determines successful online museum environments from unsuccessful environments. To study facilitation, we seek to understand facilitation styles and their outcomes in two distinct but representative museum environments. The first, Science Buzz at Science Museum of Minnesota, is a popular website identified by the field to be exemplary because of its educational value and its use of Web 2.0 functionality. The second case is the more distributed use of social software at the North Carolina Museum of Life and Science (MLS). Instead of creating learning platforms that are hosted internally, MLS is experimenting with building learning communities where people are already gathering on the web like Flickr, Twitter, and YouTube. We anticipate being able to identify clear, replicable facilitation styles and to identify outcomes associated with those styles.