Participate in a group you've joined

Once you join a group, you can participate in it! You can add a comment to the group's comment wall (like to Comments article). You can also check out the group's discussion forum and start or reply to discussions. To view
all of the discussions in the group's forum, locate the Forum box and click
the "View all" link.

When you join a group, you'll also automatically follow it. You'll be subscribed to changes on that group. This means that any time someone joins the group, comments on the group, or starts or replies to a forum discussion
within the group, you'll receive an email notification letting you know.
This is a great way to keep you involved in groups you belong to and keep
you in the know about activity happening on the group.

You can stop following a group you belong to at anytime by clicking the
"Stop Following" link on the group's page.