Google Groups can be used for a variety of functions, and across any group of people looking to share information and build their own place on the web. If you're not sure if you'd like to create a new group or join an existing one, here are some common ways to use Groups:

• Organize meetings, conferences or social events among a private list of group members
• Collaborate on projects or presentations using customizable wiki pages and file storage sections
• Find people with similar hobbies, interests or backgrounds
• Learn more about topics of interest such as sports, health or philosophy
• Stay in touch with old classmates, coworkers and friends

Links members together by e-mail and intigrates with other google tools.

Allows member to easily share files.

Allows members to add pages in a wiki-like tool.

• Allows all users to see everything in the group. so everyone is involved
• organize meetings with members 
• Can individually customize the page, as well as other users in the group
• Collaborate on projects
• Announces to all group members when there are changes. 
• Create rich custom pages

Benefits of Google Groups:

Google Groups is easy to use

Accessible from anywhere

Anyone can sign up

Simple to create content

You can post different types of material

Not too difficult to edit content posted by others