Yes — rearrange the listing of your groups to easily access your favourites. The order is shown on the Yahoo! Groups home page, and in the Yahoo! Toolbar.

Here’s how to order your groups:

1. Click Organise on the bottom of "My Groups" section on the Yahoo! Groups front page.
2. Select the group you want to move by clicking on it with your mouse.
3. Drag the group to the desired location in the list.*
4. Click Save Changes.

*In some older browsers you may see a different version of the page. In this case, select the group you wish to move and click the up/down arrow buttons until you have moved the group to its desired location in the list.