Digital Texts 2.0 is an interesting application for Facebook that lets you group and share digital material. It’s intriguing to see cutting edge development occurring in this space. From the Digital Texts 2.0 about page:
Digital Texts 2.0 was undertaken by Dr. Stéfan Sinclair as an initiative to experiment with applying the principles of Web 2.0 to the realm of electronic texts. We intend to preserve and expose all of the existing qualities of digital texts (rich hypertextual associations, refined encoding practices, analytic affordances, etc.), while enhancing them with additional characteristics provided by Web 2.0 and social networking. Thus, it is a preliminary attempt to better understand the phenomenon of social networking and how it might be adapted to benefit the ways in which humanities scholars interact with electronic texts.