Moodle 2.0

Chapter 3
The Settings page for the guest access method contains some settings for a password:
It might seem odd to set a password for an anonymous guest. However, there is a
good reason for requiring a password for the guest user. That prevents automated
software, such as web crawlers and spam harvesters, from entering your course.
Requiring a password for the guest ensures that the user entering the course is a
human and not a piece of software.
If you require a password for guest access, you'll need to tell your guests what the
password is. You could add that to the course description that visitors see on the
front page of your site, as shown in the following screenshot:
We'll talk about the course description later, when we create new courses.
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