We all know that we can leave a group by clicking on a "Leave Group" link on the homepage of a facebook group.
But if you want to leave facebook groups quickly here is a easy way to leave any group just with single mouse click.
Step 1 : From your facebook homepage click on the See All groups option.
Step 3 : Now click on that cross (see below) and confirm that you want to leave the group and its done.
Similarly, do the same with rest of the facebook groups you want to leave.
Here is a short screencast (link) of the process below…
Since the launch of facebook groups there has been both positive and negative reactions…They might be useful at times but rest of the times they can kill your time with useless clutter.