PBwiki: A free, online wiki tool.
Bloglines: Personal blog hosting site and aggregator.
Blogger: Personal blog hosting site.
MERLOT: "MERLOT is a leading edge, user-centered, searchable collection of peer reviewed, higher education, online learning materials".
iLumina: "iLumina is a digital library of sharable undergraduate teaching materials for chemistry, biology, physics, mathematics, and computer science. It is designed to quickly and accurately connect users with the educational resources they need."
LOLA Exchange: "LoLa is an exchange for facilitating the sharing of high-quality learning objects. It contains materials for use across the curriculum, with a particular focus on modules for Information Literacy."
WWWTools for Education - “Videoblogging and Vodcasting in Education” – excellent links to resources for beginners, teachers, students, and the educational use of video blogs and vodcasts.