Geelix HUD provides in-game features such as chat, desktop sharing, high definition video recording, and in-game video browsing.
The Gellix site allows players to share gameplay captures. This link goes to the SL section.
K. Nowak, J. Watt, and J. Walther. Computers in Human Behavior, 25 (5):
1108 - 1119(2009)Including the Special Issue: Design Patterns for Augmenting E-Learning Experiences.
G. Kuhnmünch, and G. Strube. Computers in Human Behavior, 25 (5):
1156 - 1164(2009)Including the Special Issue: Design Patterns for Augmenting E-Learning Experiences.