Wikis and weblogs are a good example of how Web 2.0 impacts the learning culture at universities. Both tools promote the transition from "passive consumption" to "active participation" without requiring much technical knowledge. While Moodle, as a learning platform, offers students a protected space, these communication tools are much more open (and perhaps better prepared for working life). As a teacher, you can make the transition gentle by, for example, allow the students to post under pseudonyms.
Blogs (short form of Weblog ,: Web for "World Wide Web" and log for "log book") are simple publication media that are regularly updated. The newest entry always comes first. The articles are based on personal experiences or specific topics, the authors (partially anonymized) are recognizable. The histology of the articles is clearly in focus, the written articles are not intended for changes. The included link with open internet sources offers the reader the opportunity to go deeper into the described topic.
The purpose of wikis is so that people can work on the content together. Wikis are collaborative published content that can be easily edited by other readers. After registering as a user, every reader can become an author by clicking on the “change button”. While external links are common, interwiki-links on the hypertext level play a much bigger role.